ID3v2 Collaborative Project [Help Wanted]

i started making a class to read/write mp3 id3v2 tags. i can decode the initial header and part of the optional second header, but i'm getting a little bit stuck. this is a pretty big project, and i really want to finish it, but maybe somebody wants to work on it together with me.
if you're interested, i'll post the class i have so far and we can split the work. here is a link for information on the structure of the tag, which i use as my main resource, along with opening mp3 files in a text editor and just analyzing them.

id3v2 official documentation

I would advise you to stick to the 2.3 specs as 2.4 has some issues with a number of applications..

I had started writting a ID3v2.4 Tag Reader/Writer but the spec's lacked enough information to implement some parts of it so i suspended the project.

I could dig up some of my initial work but its not much if you want it just ask.