diff --git a/Cargo.toml b/Cargo.toml
index c50e23d..8e88f1c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,9 +4,6 @@ version = "0.1.0"
 edition = "2021"
 authors = ["alterwain"]
 
-[lib]
-crate-type = ["staticlib", "cdylib", "lib"]
-
 [dependencies]
 env_logger = "0.9"
 log = "0.4.20"
diff --git a/outdb b/outdb
new file mode 100644
index 0000000..59bfd87
Binary files /dev/null and b/outdb differ
diff --git a/src/lib.rs b/src/main.rs
similarity index 81%
rename from src/lib.rs
rename to src/main.rs
index 9c0cb46..e03961c 100644
--- a/src/lib.rs
+++ b/src/main.rs
@@ -390,52 +390,89 @@ fn x_args_to_bytes(args: &Vec<XArgument>) -> Vec<u8> {
                 unknown: 0,
                 unk4: 0
             }).unwrap();
-            b = [b, s].concat();
+            let h = bincode::serialize(&ChunkHeader { 
+                chunk_type: ChunkType::StringTypes.into(), 
+                end_of_chunk: 0x18, 
+                children_count: 0x18 + s.len() as u32
+            }).unwrap();
+            b = [h, b, s].concat();
             return b;
         })
         .flatten()
         .collect()
 }
 
+fn generate_header(ct: ChunkType, header_size: usize, data_len: usize) -> Vec<u8> {
+    let header_size = 12 + header_size as u32;
+    let header = ChunkHeader{ chunk_type: ct.into(), end_of_chunk: header_size, children_count: header_size + data_len as u32};
+    bincode::serialize(&header).unwrap()
+}
+/*
+[lib]
+crate-type = ["staticlib", "cdylib", "lib"]
+*/
+
 fn to_bytes(xdb: XDatabase) -> Vec<u8> {
     let mut bytes: Vec<u8> = Vec::new();
-    bytes = [bytes, bincode::serialize(&xdb.header.unwrap()).unwrap()].concat();
-    bytes = [bytes, bincode::serialize(&xdb.data.unwrap()).unwrap()].concat();
     for i in 0..xdb.children.len() {
         let data_set = xdb.children.get(i).unwrap();
-        bytes = [bytes, bincode::serialize(&data_set.header).unwrap()].concat();
-        bytes = [bytes, bincode::serialize(&data_set.data).unwrap()].concat();
         match &data_set.child {
             XSomeList::Playlists(playlists) => {
+                let mut pl_bytes = Vec::new();
                 for u in 0..playlists.len() {
                     let playlist = playlists.get(u).unwrap();
-                    bytes = [bytes, bincode::serialize(&playlist.header).unwrap()].concat();
-                    bytes = [bytes, bincode::serialize(&playlist.data).unwrap()].concat();
-                    bytes = [bytes, x_args_to_bytes(&playlist.args)].concat();
+                    let mut args = x_args_to_bytes(&playlist.args);
+                    pl_bytes.append(&mut generate_header(ChunkType::Playlist, std::mem::size_of::<Playlist>(),args.len()));
+                    pl_bytes.append(&mut bincode::serialize(&playlist.data).unwrap());
+                    pl_bytes.append(&mut args);
                 }
+                let mhlp = ChunkHeader { chunk_type: ChunkType::PlaylistList.into(), end_of_chunk: 12, children_count: playlists.len() as u32 };
+                let mut mhlp = bincode::serialize(&mhlp).unwrap();
+                bytes.append(&mut generate_header(ChunkType::DataSet, 4, mhlp.len()));
+                bytes.append(&mut bincode::serialize(&data_set.data).unwrap());
+                bytes.append(&mut mhlp);
+                bytes.append(&mut pl_bytes);
             },
             XSomeList::AlbumList(albums) => {
+                let mut al_bytes = Vec::new();
                 for u in 0..albums.len() {
                     let album = albums.get(u).unwrap();
-                    bytes = [bytes, bincode::serialize(&album.header).unwrap()].concat();
-                    bytes = [bytes, bincode::serialize(&album.data).unwrap()].concat();
-                    bytes = [bytes, x_args_to_bytes(&album.args)].concat();
+                    let mut args = x_args_to_bytes(&album.args);
+                    al_bytes.append(&mut generate_header(ChunkType::AlbumItem, std::mem::size_of::<AlbumItem>(),args.len()));
+                    al_bytes.append(&mut bincode::serialize(&album.data).unwrap());
+                    al_bytes.append(&mut args);
                 }
+                let mhla = ChunkHeader { chunk_type: ChunkType::AlbumList.into(), end_of_chunk: 12, children_count: albums.len() as u32 };
+                let mut mhla = bincode::serialize(&mhla).unwrap();
+                bytes.append(&mut generate_header(ChunkType::DataSet, 4, mhla.len()));
+                bytes.append(&mut bincode::serialize(&data_set.data).unwrap());
+                bytes.append(&mut mhla);
+                bytes.append(&mut al_bytes);
             },
             XSomeList::TrackList(tracks) => {
+                let mut tr_bytes = Vec::new();
                 for u in 0..tracks.len() {
                     let track = tracks.get(u).unwrap();
-                    bytes = [bytes, bincode::serialize(&track.header).unwrap()].concat();
-                    bytes = [bytes, bincode::serialize(&track.data).unwrap()].concat();
-                    bytes = [bytes, x_args_to_bytes(&track.args)].concat();
+                    let mut args = x_args_to_bytes(&track.args);
+                    tr_bytes.append(&mut generate_header(ChunkType::TrackItem, std::mem::size_of::<TrackItem>(),args.len()));
+                    tr_bytes.append(&mut bincode::serialize(&track.data).unwrap());
+                    tr_bytes.append(&mut args);
                 }
+                let mhlt = ChunkHeader { chunk_type: ChunkType::TrackList.into(), end_of_chunk: 12, children_count: tracks.len() as u32 };
+                let mut mhlt = bincode::serialize(&mhlt).unwrap();
+                bytes.append(&mut generate_header(ChunkType::DataSet, 4, mhlt.len()));
+                bytes.append(&mut bincode::serialize(&data_set.data).unwrap());
+                bytes.append(&mut mhlt);
+                bytes.append(&mut tr_bytes);
             }
         }
     }
+    bytes = [bincode::serialize(&xdb.data.unwrap()).unwrap(), bytes].concat();
+    bytes = [generate_header(ChunkType::Database, std::mem::size_of::<Database>(), bytes.len()), bytes].concat();
     bytes
 }
 
-/*fn main() {
+fn main() {
 
     // Initialize the logger with 'info' as the default level
     Builder::new()
@@ -447,10 +484,12 @@ fn to_bytes(xdb: XDatabase) -> Vec<u8> {
     match f.read_to_end(&mut buf) {
         Ok(n) => {
             let data = &buf[..n];
-            parse_bytes(data);
+            let xdb = parse_bytes(data);
+            let mut op = File::create("outdb").unwrap();
+            info!("Write res: {:?}", op.write(&to_bytes(xdb)));
         },
         Err(e) => {
             error!("Error: {}",e);
         }
     }
-}*/
+}