SJmp3 - java sound player, support formats: mp1,mp2,mp3,mpga,wav.
SJmp3 - 100%-pure java, free cross-platform Solo Java sound player. Including m3u playlist editor, id3 tag editor, wav-to-mp3 and mp3-to-wav converter, mp3 splitter by time/size, over 35 skins (Look and Feels). Simple and intuitive graphical User Interface. Up to 7 playlist at the same time. Network stream audio over HTTP/HTTPS/Anonymous FTP with/without Proxy-Server support. Different playing modes. Seek by slider using my native seeking algorithm. Fast Forward / Fast Backward, Next / Previous track, Play / Pause / Stop track actions. Support recursive search media-files in directories tree. File/Stream information. Audio-mixer support. User settings save. Supported formats: *.mp1, *.mp2, *.mp3, *.mpga, *.wav. Internet Radio support. Tested on Windows/Linux OS. NOT used JMF. Need JRE 1.8 .
libTiMidity is a MIDI to WAVE converter library that uses Gravis Ultrasound-compatible patch files to generate digital audio data from General MIDI files. This library based on the TiMidity decoder from SDL_sound library.
Universal video transcoder
viDrop is free video transcoding software for GNU/Linux and Windows operating systems. With its help you can easily convert your favourite movies or videos into format, playable on your Smarthone, Tablet, MID, Portable Media Player etc.
NorQualizer is a smart audio equalizer/normalizer which corrects audio files to get them all similar in terms of bandwidth and volume level. Especially useful for preparing audio CDs with files from different sources.
Python Script to process a wave file and transform to movement (key frames) on Blender 2.5. Input: sound file (.wav) Output: Key frames direct into the selected object Work to meshes and bones (location, scale or rotation in any axis)
Generates alternative audio formats for a growing audio collection. Add a new FLAC album, then transcode for mobile devices. Currently run from the command line, GUI to come. Extensible in Java to add custom 'per track' tasks.
A Qt-based C++ library for audio decoding, encoding and conversion.
QAudioCoder is a Qt library for decoding and encoding raw audio samples. The library also provides functionality to directly decode or encode audio files and convert between different formats. Currently only WAVE, MP3 and FLAC formats are supported.
Console application for conversion of seismic data to wav-pcm.
The Universal Batch Converter is a project to take all the myriad file conversion programs, and provide a powerful but easy to use interface for all types of file conversion.
auxMpeg is a small portable dynamically-linkable library that provides decoding ability for MPEG-1, MPEG-2 Layer I, Layer II and Layer III.
A cross-platform (if by "platform" you mean Windows and *nix) Sample Rate Conversion library. You figure out what the f stands for.
A port of Piet van Oostrum’s MIDI file manipulation utilities
mf2t/t2mf is a Unix/Windows port of the mf2t/t2mf standard MIDI file manipulation utilities by Piet van Oostrum. mf2t reads a standard MIDI file and writes an ASCII representation of it that is both compact and easily parsable. t2mf reparses the text representation into a standard MIDI file. One notable enhancement in this port is the support of 8‐bit textual data.
Remove the ID3v2 tag from an MP3 file
v2strip is a simple command-line utility that lets you remove the ID3v2 tag from an MP3 file. The ID3v2 format is nice in many ways, but it can cause problems when being parsed by MP3 players and utilities that don't support ID3v2 tags.
Concatenates RIFF WAVE files
wavecat is a simple command-line utility that lets you concatenate RIFF WAVE files. It supports RIFX (Motorola integer byte order) files as well.