This page describes some audio formats and how to use them in Debian
Ogg is a free, open container format maintained by the Xiph.Org Foundation. It is unrestricted by software patents and designed to provide for efficient streaming and manipulation of high-quality digital multimedia. The Ogg container format can multiplex a number of independent streams for audio, video, text (such as subtitles), and metadata.
MP3 is an audio coding format for digital audio.
MP3 is a widely supported, lossy audio compression format with a lower compression ratio than Ogg.
Convert all mp3 files to CD tracks: =1; for f in *.mp3; do mpg321 --cdr /tmp/$(printf %02d.cdr $i) "$f"; let i++; done