Different file formats shall be provided for catering to specific user requirements.
Audio Master
Content type: FLAC Uncompressed WAV, AU or AIFF
Format: 44.1 KHz / 2 channel / 16 bits per sample
Redistributable
Content type: MP3, OGG Vorbis, AAC or VQF
Format: 44.1 KHz / 2 channel / 256 Kbps or equivalent
Tracks can have different revisions if I choose to go in a different direction during the recording of a track. Sessions can be branched off, or one session can be shelved to make room for another.