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Nero AAC reference quality MPEG-4 and 3GPP audio codec

MP3::Tag - Module for reading tags of MP3 audio files

OptimFROG is a lossless audio compression program. Its main goal is to reduce at maximum the size of audio files, while permitting bit identical restoration for all input. It is similar with the ZIP compression, but it is highly specialized to compress audio data. OptimFROG obtains asymptotically the best lossless audio compression ratios. It has Windows, Linux, and Mac versions, fully featured input plug-ins for the Windows Media Player, foobar2000, Winamp2/3/5, dBpowerAMP, XMPlay, QCD, and XMMS audio players (with bitstream error resilience, ID3v1.1 and APEv2 read tagging support, ID3v2 compatible), optimal support for all integer PCM wave formats up to 32 bits and an extensible streamable (error tolerant) compressed format. It is also fast, the default mode encodes CD quality audio data at 12.4x real-time and decodes at 17.4x real- time on AMD Athlon XP 1800+ (the fastest mode encodes at 28.1x real-time and decodes at 24.7x real-time). Self-extracting (sfx) archives can also be created with a small overhead of just 54 KB.

FAAC (Freeware Advanced Audio Coder) is an MPEG-2 and MPEG-4 AAC Audio encoder. FAAC currently supports MPEG-4 LTP, MAIN and LOW COMPLEXITY object types and MAIN and LOW MPEG-2 object types. It also supports multichannel and gapless encoding.

Flac123 is a console-line Free Lossless Audio Codec (flac) audio player. It implements mpg123's 'Remote Control' interface and has the ability to output to a wav file or stdout.

jack_mixer is a GTK+ JACK audio mixer app with a look similar to its hardware counterpart. It has lot of useful features, apart from being able to mix multiple JACK audio streams.

SDL_mixer is a sample multi-channel audio mixer library. It supports any number of simultaneously playing channels of 16 bit stereo audio, plus a single channel of music, mixed by the popular MikMod MOD, Timidity MIDI and SMPEG MP3 libraries.

SDL_mixer is a sample multi-channel audio mixer library. It supports any number of simultaneously playing channels of 16 bit stereo audio, plus a single channel of music, mixed by the popular MikMod MOD, Timidity MIDI and SMPEG MP3 libraries.

osdmixer monitors changes of your audio volume settings and displays the volume as progress bars on your screen.

SoundTouch is an open-source audio processing library for changing the tempo, pitch, and playback rates of audio streams or files: * Tempo (time-stretch): changes the sound to play at faster or slower speed than original, without affecting the sound pitch * Pitch (key): changes the sound pitch or key, without affecting the sound tempo or speed * Playback rate: changes both the sound tempo and pitch, as if an LP disc was played at wrong RPM rate The SoundTouch library is suited for application developers writing sound processing tools that require tempo/pitch control functionality, or just for playing around with the sound effects. The source kit includes also an example utility SoundStretch that allows processing .WAV audio files with command-line interface.