MP3nema is a tool aimed at analyzing and capturing data that is hidden between frames in an MP3 file or stream, otherwise noted as “out of band” data. This utility also supports adding data between frames and capturing streaming audio.
You can download it from the following link: https://packetstormsecurity.com/files/download/72226/mp3nema-v0_2.tar.gz
Source: https://packetstormsecurity.com/files/72226/mp3nema-v0_2.tar.gz.html