diff --git a/musikr/src/main/jni/shim/mp4_shim.cpp b/musikr/src/main/jni/shim/mp4_shim.cpp
index a01add652..ae16a98c8 100644
--- a/musikr/src/main/jni/shim/mp4_shim.cpp
+++ b/musikr/src/main/jni/shim/mp4_shim.cpp
@@ -24,4 +24,62 @@ namespace taglib_shim {
         
         return entries;
     }
+
+    IntPair::IntPair(int first, int second)
+        : first_(first), second_(second) {}
+
+    int IntPair::first() const {
+        return first_;
+    }
+
+    int IntPair::second() const {
+        return second_;
+    }
+
+    CoverArt::CoverArt(TagLib::MP4::CoverArt::Format format, const TagLib::ByteVector& data)
+        : art_(format, data) {}
+
+    uint32_t CoverArt::format() const {
+        return static_cast<uint32_t>(art_.format());
+    }
+
+    std::unique_ptr<TagLib::ByteVector> CoverArt::data() const {
+        return std::make_unique<TagLib::ByteVector>(art_.data());
+    }
+
+    CoverArtList::CoverArtList(const TagLib::MP4::CoverArtList& list)
+        : list_(list) {}
+
+    std::unique_ptr<std::vector<CoverArt>> CoverArtList::to_vector() const {
+        auto vec = std::make_unique<std::vector<CoverArt>>();
+        for (const auto& item : list_) {
+            vec->emplace_back(item.format(), item.data());
+        }
+        return vec;
+    }
+
+    unsigned int Item_type(const TagLib::MP4::Item& item) {
+        return static_cast<unsigned int>(item.type());
+    }
+
+    std::unique_ptr<IntPair> Item_toIntPair(const TagLib::MP4::Item& item) {
+        auto pair = item.toIntPair();
+        return std::make_unique<IntPair>(pair.first, pair.second);
+    }
+
+    std::unique_ptr<TagLib::StringList> Item_toStringList(const TagLib::MP4::Item& item) {
+        return std::make_unique<TagLib::StringList>(item.toStringList());
+    }
+
+    std::unique_ptr<TagLib::ByteVectorList> Item_toByteVectorList(const TagLib::MP4::Item& item) {
+        return std::make_unique<TagLib::ByteVectorList>(item.toByteVectorList());
+    }
+
+    std::unique_ptr<CoverArtList> Item_toCoverArtList(const TagLib::MP4::Item& item) {
+        return std::make_unique<CoverArtList>(item.toCoverArtList());
+    }
+
+    int64_t Item_toLongLong(const TagLib::MP4::Item& item) {
+        return item.toLongLong();
+    }
 } 
\ No newline at end of file
diff --git a/musikr/src/main/jni/shim/mp4_shim.hpp b/musikr/src/main/jni/shim/mp4_shim.hpp
index e4c00565c..da73a92f6 100644
--- a/musikr/src/main/jni/shim/mp4_shim.hpp
+++ b/musikr/src/main/jni/shim/mp4_shim.hpp
@@ -19,4 +19,41 @@ namespace taglib_shim {
     };
 
     std::unique_ptr<std::vector<ItemMapEntry>> ItemMap_to_entries(const TagLib::MP4::ItemMap& map);
+
+    class IntPair {
+    public:
+        IntPair(int first, int second);
+        int first() const;
+        int second() const;
+
+    private:
+        int first_;
+        int second_;
+    };
+
+    class CoverArt {
+    public:
+        CoverArt(TagLib::MP4::CoverArt::Format format, const TagLib::ByteVector& data);
+        uint32_t format() const;
+        std::unique_ptr<TagLib::ByteVector> data() const;
+
+    private:
+        TagLib::MP4::CoverArt art_;
+    };
+
+    class CoverArtList {
+    public:
+        CoverArtList(const TagLib::MP4::CoverArtList& list);
+        std::unique_ptr<std::vector<CoverArt>> to_vector() const;
+
+    private:
+        TagLib::MP4::CoverArtList list_;
+    };
+
+    unsigned int Item_type(const TagLib::MP4::Item& item);
+    std::unique_ptr<IntPair> Item_toIntPair(const TagLib::MP4::Item& item);
+    std::unique_ptr<TagLib::StringList> Item_toStringList(const TagLib::MP4::Item& item);
+    std::unique_ptr<TagLib::ByteVectorList> Item_toByteVectorList(const TagLib::MP4::Item& item);
+    std::unique_ptr<CoverArtList> Item_toCoverArtList(const TagLib::MP4::Item& item);
+    int64_t Item_toLongLong(const TagLib::MP4::Item& item);
 } 
\ No newline at end of file
diff --git a/musikr/src/main/jni/shim/tk_shim.cpp b/musikr/src/main/jni/shim/tk_shim.cpp
index e5ec3d389..250c9c530 100644
--- a/musikr/src/main/jni/shim/tk_shim.cpp
+++ b/musikr/src/main/jni/shim/tk_shim.cpp
@@ -32,4 +32,14 @@ namespace taglib_shim
         }
         return result;
     }
+
+    std::unique_ptr<std::vector<TagLib::ByteVector>> ByteVectorList_to_vector(const TagLib::ByteVectorList &list)
+    {
+        std::unique_ptr<std::vector<TagLib::ByteVector>> result = std::make_unique<std::vector<TagLib::ByteVector>>();
+        for (const auto &vec : list)
+        {
+            result->push_back(vec);
+        }
+        return result;
+    }
 }
diff --git a/musikr/src/main/jni/shim/tk_shim.hpp b/musikr/src/main/jni/shim/tk_shim.hpp
index 5f59ccd0a..3fe1bb924 100644
--- a/musikr/src/main/jni/shim/tk_shim.hpp
+++ b/musikr/src/main/jni/shim/tk_shim.hpp
@@ -30,4 +30,6 @@ namespace taglib_shim
 
     std::unique_ptr<std::vector<Property>> SimplePropertyMap_to_vector(const TagLib::SimplePropertyMap &map);
     std::unique_ptr<std::vector<TagLib::String>> StringList_to_vector(const TagLib::StringList &list);
+
+    std::unique_ptr<std::vector<TagLib::ByteVector>> ByteVectorList_to_vector(const TagLib::ByteVectorList &list);
 }
\ No newline at end of file
diff --git a/musikr/src/main/jni/src/taglib/bridge.rs b/musikr/src/main/jni/src/taglib/bridge.rs
index 5d26f28a8..284b04002 100644
--- a/musikr/src/main/jni/src/taglib/bridge.rs
+++ b/musikr/src/main/jni/src/taglib/bridge.rs
@@ -220,6 +220,12 @@ mod bridge_impl {
             string_list: Pin<&CPPStringList>,
         ) -> UniquePtr<CxxVector<CPPString>>;
 
+        #[namespace = "TagLib"]
+        #[cxx_name = "ByteVectorList"]
+        type CPPByteVectorList;
+        #[namespace = "taglib_shim"]
+        fn ByteVectorList_to_vector(list: Pin<&CPPByteVectorList>) -> UniquePtr<CxxVector<CPPByteVector>>;
+
         #[namespace = "TagLib"]
         #[cxx_name = "ByteVector"]
         type CPPByteVector;
@@ -251,13 +257,78 @@ mod bridge_impl {
         #[namespace = "taglib_shim"]
         #[cxx_name = "ItemMapEntry"]
         type CPPItemMapEntry;
-        fn key(self: Pin<&CPPItemMapEntry>) -> &CPPString;
-        fn value(self: Pin<&CPPItemMapEntry>) -> &CPPMP4Item;
+        fn key<'slf, 'file_ref>(self: Pin<&'slf CPPItemMapEntry>) -> &'file_ref CPPString;
+        fn value<'slf, 'file_ref>(self: Pin<&'slf CPPItemMapEntry>) -> &'file_ref CPPMP4Item;
 
         #[namespace = "TagLib::MP4"]
         #[cxx_name = "Item"]
         type CPPMP4Item;
+        fn isValid(self: Pin<&CPPMP4Item>) -> bool;
+        fn toBool(self: Pin<&CPPMP4Item>) -> bool;
+        fn toInt(self: Pin<&CPPMP4Item>) -> i32;
+        fn toByte(self: Pin<&CPPMP4Item>) -> u8;
+        fn toUInt(self: Pin<&CPPMP4Item>) -> u32;
 
+        fn Item_type(item: Pin<&CPPMP4Item>) -> u32;
+        #[namespace = "taglib_shim"]
+        fn Item_toIntPair(item: Pin<&CPPMP4Item>) -> UniquePtr<CPPIntPair>;
+        #[namespace = "taglib_shim"]
+        fn Item_toStringList(item: Pin<&CPPMP4Item>) -> UniquePtr<CPPStringList>;
+        #[namespace = "taglib_shim"]
+        fn Item_toByteVectorList(item: Pin<&CPPMP4Item>) -> UniquePtr<CPPByteVectorList>;
+        #[namespace = "taglib_shim"]
+        fn Item_toCoverArtList(item: Pin<&CPPMP4Item>) -> UniquePtr<CPPCoverArtList>;
+        #[namespace = "taglib_shim"]
+        fn Item_toLongLong(item: Pin<&CPPMP4Item>) -> i64; 
+
+        #[namespace = "taglib_shim"]
+        #[cxx_name = "IntPair"]
+        type CPPIntPair;
+        fn first(self: Pin<&CPPIntPair>) -> i32;
+        fn second(self: Pin<&CPPIntPair>) -> i32;
+
+        #[namespace = "taglib_shim"]
+        #[cxx_name = "CoverArtList"]
+        type CPPCoverArtList;
+        fn to_vector(self: Pin<&CPPCoverArtList>) -> UniquePtr<CxxVector<CPPCoverArt>>;
+
+        #[namespace = "taglib_shim"]
+        #[cxx_name = "CoverArt"]
+        type CPPCoverArt;
+        fn format(self: Pin<&CPPCoverArt>) -> u32;
+        fn data(self: Pin<&CPPCoverArt>) -> UniquePtr<CPPByteVector>;
+    }
+}
+
+#[repr(u8)]
+pub enum MP4ItemType {
+    Void,
+    Bool,
+    Int,
+    IntPair,
+    Byte,
+    UInt,
+    LongLong,
+    StringList,
+    ByteVectorList,
+    CoverArtList,
+}
+
+impl MP4ItemType {
+    pub fn from_u32(value: u32) -> Option<Self> {
+        match value {
+            0 => Some(Self::Void),
+            1 => Some(Self::Bool),
+            2 => Some(Self::Int),
+            3 => Some(Self::IntPair),
+            4 => Some(Self::Byte),
+            5 => Some(Self::UInt),
+            6 => Some(Self::LongLong),
+            7 => Some(Self::StringList),
+            8 => Some(Self::ByteVectorList),
+            9 => Some(Self::CoverArtList),
+            _ => None,
+        }
     }
 }
 
diff --git a/musikr/src/main/jni/src/taglib/iostream.rs b/musikr/src/main/jni/src/taglib/iostream.rs
index 5a256973f..f6c506554 100644
--- a/musikr/src/main/jni/src/taglib/iostream.rs
+++ b/musikr/src/main/jni/src/taglib/iostream.rs
@@ -54,7 +54,6 @@ impl<'io_stream> DynIOStream<'io_stream> {
     pub fn write(&mut self, data: &[u8]) {
         self.0.write_all(data).unwrap();
     }
-
     pub fn seek(&mut self, offset: i64, whence: i32) {
         let pos = match whence {
             0 => SeekFrom::Start(offset as u64),
diff --git a/musikr/src/main/jni/src/taglib/mp4.rs b/musikr/src/main/jni/src/taglib/mp4.rs
index 016f17752..ffae31c13 100644
--- a/musikr/src/main/jni/src/taglib/mp4.rs
+++ b/musikr/src/main/jni/src/taglib/mp4.rs
@@ -1,5 +1,5 @@
 pub use super::bridge::CPPMP4Tag;
-use super::bridge::{CPPItemMap, ItemMap_to_entries, CPPItemMapEntry};
+use super::bridge::{CPPItemMap, ItemMap_to_entries, CPPItemMapEntry, CPPMP4Item, MP4ItemType, CPPIntPair};
 use super::tk;
 use super::this::{OwnedThis, RefThis, RefThisMut, ThisMut, This};
 use std::collections::HashMap;
@@ -30,10 +30,10 @@ impl<'file_ref> ItemMap<'file_ref> {
         Self { this }
     }
 
-    pub fn to_hashmap(&self) -> HashMap<String, ()> {
+    pub fn to_hashmap(&self) -> HashMap<String, MP4Item<'file_ref>> {
         let cxx_vec = ItemMap_to_entries(self.this.pin());
-        cxx_vec
-            .iter()
+        let vec: Vec<(String, MP4Item<'file_ref>)> =
+        cxx_vec.iter()
             .map(|property| {
                 // SAFETY:
                 // - This pin is only used in this unsafe scope.
@@ -45,9 +45,158 @@ impl<'file_ref> ItemMap<'file_ref> {
                 let key_ref = property_pin.key();
                 let key_this = unsafe { RefThis::new(key_ref) };
                 let key = tk::String::new(key_this).to_string();
-                // For now, we're just returning () as a placeholder for MP4::Item
-                (key, ())
+                
+                let value_ref = property_pin.value();
+                let value_this = unsafe { RefThis::new(value_ref) };
+                let value = MP4Item::new(value_this);
+                
+                (key, value)
+            })
+            .collect();
+
+        HashMap::from_iter(vec)
+    }
+}
+
+pub struct MP4Item<'file_ref> {
+    this: RefThis<'file_ref, CPPMP4Item>,
+}
+
+impl<'file_ref> MP4Item<'file_ref> {
+    pub fn new(this: RefThis<'file_ref, CPPMP4Item>) -> Self {
+        Self { this }
+    }
+
+    pub fn data(&self) -> Option<MP4Data<'file_ref>> {
+        if !self.this.pin().isValid() {
+            return None;
+        }
+
+        let item_type = MP4ItemType::from_u32(super::bridge::Item_type(self.this.pin()));
+        item_type.and_then(|item_type| match item_type {
+            MP4ItemType::Void => Some(MP4Data::Void),
+            MP4ItemType::Bool => Some(MP4Data::Bool(self.this.pin().toBool())),
+            MP4ItemType::Int => Some(MP4Data::Int(self.this.pin().toInt())),
+            MP4ItemType::IntPair => {
+                let pair = super::bridge::Item_toIntPair(self.this.pin());
+                let pair_this = unsafe { OwnedThis::new(pair) };
+                pair_this.map(|this| MP4Data::IntPair(IntPair::new(this)))
+            },
+            MP4ItemType::Byte => Some(MP4Data::Byte(self.this.pin().toByte())),
+            MP4ItemType::UInt => Some(MP4Data::UInt(self.this.pin().toUInt())),
+            MP4ItemType::LongLong => Some(MP4Data::LongLong(super::bridge::Item_toLongLong(self.this.pin()))),
+            MP4ItemType::StringList => {
+                let string_list = super::bridge::Item_toStringList(self.this.pin());
+                let string_list_this = unsafe { OwnedThis::new(string_list) };
+                string_list_this.map(|this| MP4Data::StringList(tk::StringList::new(this)))
+            },
+            MP4ItemType::ByteVectorList => {
+                let byte_vector_list = super::bridge::Item_toByteVectorList(self.this.pin());
+                let byte_vector_list_this = unsafe { OwnedThis::new(byte_vector_list) };
+                byte_vector_list_this.map(|this| MP4Data::ByteVectorList(tk::ByteVectorList::new(this)))
+            },
+            MP4ItemType::CoverArtList => {
+                let cover_art_list = super::bridge::Item_toCoverArtList(self.this.pin());
+                let cover_art_list_this = unsafe { OwnedThis::new(cover_art_list) };
+                cover_art_list_this.map(|this| MP4Data::CoverArtList(CoverArtList::new(this)))
+            }
+        })
+    }
+}
+
+pub struct CoverArtList<'file_ref> {
+    this: OwnedThis<'file_ref, super::bridge::CPPCoverArtList>,
+}
+
+impl<'file_ref> CoverArtList<'file_ref> {
+    pub fn new(this: OwnedThis<'file_ref, super::bridge::CPPCoverArtList>) -> Self {
+        Self { this }
+    }
+
+    pub fn to_vec(&self) -> Vec<CoverArt> {
+        let cover_arts = self.this.pin().to_vector();
+        cover_arts
+            .iter()
+            .map(|ca| {
+                let ca_pin = unsafe { Pin::new_unchecked(ca) };
+                let format = CoverArtFormat::from_u32(ca_pin.format());
+                let data = ca_pin.data();
+                let data_this = unsafe { RefThis::new(&*data) };
+                let data = tk::ByteVector::new(data_this).to_vec();
+                CoverArt { format, data }
             })
             .collect()
     }
-} 
\ No newline at end of file
+}
+
+pub struct IntPair<'file_ref> {
+    this: OwnedThis<'file_ref, CPPIntPair>,
+}
+
+impl<'file_ref> IntPair<'file_ref> {
+    pub fn new(this: OwnedThis<'file_ref, CPPIntPair>) -> Self {
+        Self { this }
+    }
+
+    pub fn to_tuple(&self) -> Option<(i32, i32)> {
+        let this = self.this.pin();
+        let first = this.first();
+        let second = this.second();
+        Some((first, second))
+    }
+}
+
+pub enum MP4Data<'file_ref> {
+    Void,
+    Bool(bool),
+    Int(i32),
+    Byte(u8),
+    UInt(u32),
+    LongLong(i64),
+    IntPair(IntPair<'file_ref>),
+    StringList(tk::OwnedStringList<'file_ref>),
+    ByteVectorList(tk::OwnedByteVectorList<'file_ref>),
+    CoverArtList(CoverArtList<'file_ref>),
+}
+
+#[derive(Debug, Clone, PartialEq)]
+pub struct CoverArt {
+    format: CoverArtFormat,
+    data: Vec<u8>,
+}
+
+impl CoverArt {
+    pub fn new(format: CoverArtFormat, data: Vec<u8>) -> Self {
+        Self { format, data }
+    }
+
+    pub fn format(&self) -> CoverArtFormat {
+        self.format
+    }
+
+    pub fn data(&self) -> &[u8] {
+        &self.data
+    }
+}
+
+#[derive(Debug, Clone, Copy, PartialEq)]
+pub enum CoverArtFormat {
+    Unknown,
+    BMP,
+    JPEG,
+    GIF,
+    PNG,
+}
+
+impl CoverArtFormat {
+    fn from_u32(value: u32) -> Self {
+        match value {
+            0 => CoverArtFormat::Unknown,
+            1 => CoverArtFormat::BMP,
+            2 => CoverArtFormat::JPEG,
+            3 => CoverArtFormat::GIF,
+            4 => CoverArtFormat::PNG,
+            _ => CoverArtFormat::Unknown,
+        }
+    }
+}
diff --git a/musikr/src/main/jni/src/taglib/tk.rs b/musikr/src/main/jni/src/taglib/tk.rs
index 829751381..727afbbb0 100644
--- a/musikr/src/main/jni/src/taglib/tk.rs
+++ b/musikr/src/main/jni/src/taglib/tk.rs
@@ -1,4 +1,4 @@
-use super::bridge::{self, CPPByteVector, CPPString, CPPStringList};
+use super::bridge::{self, CPPByteVector, CPPByteVectorList, CPPString, CPPStringList};
 use super::this::{RefThis, RefThisMut, This, OwnedThis};
 use cxx::{memory::UniquePtrTarget, UniquePtr};
 use std::marker::PhantomData;
@@ -94,3 +94,27 @@ impl<'file_ref, T: This<'file_ref, CPPByteVector>> ByteVector<'file_ref, T> {
 pub type OwnedByteVector<'file_ref> = ByteVector<'file_ref, OwnedThis<'file_ref, CPPByteVector>>;
 pub type RefByteVector<'file_ref> = ByteVector<'file_ref, RefThis<'file_ref, CPPByteVector>>;
 pub type RefByteVectorMut<'file_ref> = ByteVector<'file_ref, RefThisMut<'file_ref, CPPByteVector>>;
+
+pub struct ByteVectorList<'file_ref, T: This<'file_ref, CPPByteVectorList>> {
+    _data: PhantomData<&'file_ref CPPByteVectorList>,
+    this: T,
+}
+
+impl<'file_ref, T: This<'file_ref, CPPByteVectorList>> ByteVectorList<'file_ref, T> {
+    pub(super) fn new(this: T) -> Self {
+        Self { _data: PhantomData, this }
+    }
+
+    pub fn to_vec(&self) -> Vec<Vec<u8>> {
+        let cxx_values = bridge::ByteVectorList_to_vector(self.this.pin());
+        cxx_values
+            .iter()
+            .map(|value| ByteVector::new(unsafe { RefThis::new(value) }).to_vec())
+            .collect()
+    }
+}
+
+pub type OwnedByteVectorList<'file_ref> = ByteVectorList<'file_ref, OwnedThis<'file_ref, CPPByteVectorList>>;
+pub type RefByteVectorList<'file_ref> = ByteVectorList<'file_ref, RefThis<'file_ref, CPPByteVectorList>>;
+pub type RefByteVectorListMut<'file_ref> = ByteVectorList<'file_ref, RefThisMut<'file_ref, CPPByteVectorList>>;
+