The riofill utility randomly selects a list of MP3 files from a given directory and ensures they will all fit into the memory of a Diamond Rio portable MP3 player. Switches allow differently-sized Rios to be filled. By default, riofill uploads the playlist produced to a Rio player connected to the computer's parallel port using the Snowblind Alliance (SBA) Rio utility. Optionally, the generated playlist may be printed to stdout or saved in a file instead of being uploaded to the Rio.
Rip is a commandline-based Perl script which rips Compact Disc tracks to either Motion Picture Expert Group Layer 3 (MP3) files, Ogg Vorbis files, or FLAC files without user intervention between the steps of ripping. It supports cdparanoia and cdda2wav for ripping, BladeEnc, LAME, notLAME, and GOGO for WAV to MP3 encoding, oggenc for WAV to Ogg Vorbis encoding/tagging, FLAC for WAV to flac encoding. In addition, it supports CDDB for automatic renaming of files and MP3::Info for MP3 tagging.
RipIT is a command line program for ripping, encoding, and tagging MP3s that needs no user intervention. It is a wrapper for dagrab, cdparanoia, cdda2wav, LAME, Ogg Vorbis, Flac, Faac, Musepack, Wavpack, mp4als and ffmpeg. It supports the retrieval and submission of CDDB and MusicBrainz entries and cover art.
Sfront compiles MPEG 4 Structured Audio (MP4-SA) programs into efficient C programs that generate audio when executed. MP4-SA is a standard for normative algorithmic sound, which combines an audio signal processing language (SAOL) with score languages (MIDI and SASL). Under Mac OS X and Linux, sfront supports real-time, low-latency audio input/output and MIDI input. Under Mac OS X, sfront supports the creation of AudioUnit plug-ins. The documentation includes a book about SAOL programming.