cutmp3 is a small and fast command line MP3 editor. It lets you select sections of an MP3 interactively or via a timetable and save them to separate files without quality loss.
dsprec reads R B-bit signed samples per second, on each of C channels, from DEV (or /dev/dsp if DEV is not supplied) and outputs them to standard output. It stops when it receives a signal or it fails to read from DEV.
gnormalize is a gtk-perl front end to normalize. It decodes the mp3 files to wave, then normalize the wave and reencode it to mp3 using lame. gnormalize can also change the encode and id3 tag properties of final normalized mp3 files.
mp3cut is a very rudimentary tool for removing segments from mp3 audio files. It cuts mp3 files on frame boundaries with 1/10th of a second accuracy and leaves any ID3 information intact.
MP3Gain analyzes and adjusts mp3 files so that they have the same volume. MP3Gain does not just do peak normalization, as many normalizers do. Instead, it does some statistical analysis to determine how loud the file actually sounds to the human ear.
Mp3splt is a command line utility to split mp3 (VBR supported) and ogg files selecting a begin and an end time position, without decoding.
mp3stat is a simple MP3/Ogg bitrate analysis tool intended for comparing a single audio source encoded with different settings or different encoders.
mp3togo is a tool for creating low bitrate subsets from a high quality music archive. The sets of files mp3togo creates can be played on most mp3 players, used to create audio and mp3 cds or to create compressed distributions of a set of wav files.
oggment is a mixing/streaming environment able to mix an unlimited (depending on the CPU) number of vorbis encoded audio files from the hardisk with a line/mic input from the soundcard and stream to an icecast2.0 server.
PyMP3Cut is a Python command line tool designed to cut very huge MP3 files.
xcutmp3 is a simple frontend for cutmp3 for people who do not like to learn keystrokes.
Zak allows you to select one or more MP3 files and convert them into a single MP3, MP4, M4A, or M4B file. The primary use for Zak is audio books. Most audio books are distributed in several files, usually one per chapter. Converting these files into a single .m4b allows one to take advantage of the iPod's bookmarking features.