Alright, I have implemented audio playback for music and sound in my game engine, and I can convert any format to MP3, but my problem starts there. The files play fine and all, but there is no ID info on the songs. I want to mark the songs by their original author or myself depending on who wrote the piece. I assume that the internal structure of an MP3 is basically some kind of header followed by compressed redbook audio. If that's the case then editing or adding the header would be easy. However, I still need the format of the header. Any ideas?