studiotoolz♥

Play is an application for playing and managing audio files.
Play currently supports playback of FLAC, Ogg (Vorbis), Ogg (FLAC), Musepack, WavPack, Monkey’s Audio, AAC, Apple Lossless, MP3 and various other audio file formats.
Play is integrated with the official Last.fm client, so you can share your listening habits with everyone. Consider joining the Play Users group!
Play [...]

Arcade Music Player
M1 plays the music from classic arcade games by running the code in the original ROMs.
Features
Support for over 1100 different games.
Emulation of over a dozen CPUs and more than one hundred boards.
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http://www.bannister.org/software/m1.htm (264 clicks)

Video Game Music Player
Audio Overload emulates the sound hardware of vintage consoles and computers, allowing you to listen to completely authentic renditions of classic video game tunes.
Audio Overload supports music in the following file formats:
AY - Amstrad CPC/Spectrum ZX/Atari ST
COP - Sam Coupe
GBS - Nintendo Gameboy
GSF - Nintendo Gameboy Advance
GYM - Sega Megadrive/Genesis
HES - PC [...]

DynamDJ 2, a free (= free of charge, currently not open source) audio player and mixer for Mac OS X with several more advanced features such as pitch shifting, spatial multi-channel audio, graphical equalizers, live audio input and more.
4 decks/players
separate pitch and speed adjustment
10-band equalizer
reverb effect
automatic rhythm synchronization
cross-fading
spatial audio using multi-channel output
live audio input
Speech synthesizer [...]

Audiophile is an open source simple DJ application, it features a mixer-like interface with 2 channels, a crossfader, and an equalizer.
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http://homepage.mac.com/a_logan/PWS/ (292 clicks)

krix is a visual music browser for MacOSX.
krix may be navigated by using the Apple Remote.
In fullscreen mode, krix displays texts in large fonts to be recognizable from the distance.
krix is in continuous development, it may be buggy, use at your own risk!
it requires Mac OS X 10.4, it runs smooth on a Dual Core [...]

The Tactile12000X is the OS X version of the Tactile12000. The Tactile12000 puts a full set of DJ gear on your desktop - it is a 3-D, fully interactive, digital DJ setup - two turntables and a mixer.
You can crossfade, backspin, and speed up and slow down music, including MP3 files, on your computer. Version [...]

UltraMixer is a DJ-Mixing-Software which enables you to mix digital music in various formats such as MP3, WMA, OGG, WAV or CDs in real time. All you need is a sound card. The DJ’s turntables are replaced by two digital SoundPlayers, the “vinyls” are available within seconds through the integrated FileArchive.
UltraMixer is the first DJ [...]

Whamb is a Digital Audio Player for Mac OS X. For now, it supports Audio CDs, MP3 and Ogg Vorbis files and Internet streams.
Share now your music on your local area network! Whamb is the first to use Rendezvous technology to offer you a easy way to share your playlists and songs, without any configuration [...]

This piece of software is designed to let a DJ get his job done more easily. You can easily manage your collection of Vinyls, Cds, Mp3s and save and visualize possible transitions between these tracks.
The intention of this software is to let you plan your sets, and keep cool transitions in mind while playing around [...]

Cog is an Open Source audio player that supports all the most important lossless audio formats, currently it supports the following formats: Ogg Vorbis, Mp3, Flac, Musepack, Monkeys Audio, Shorten ,Wavpack, AAC, Wave/AIFF
and some of the features:
Gapless playback, Seeking, Automatic updating, Feedback form, Smart shuffle, Vorbis comments, ID3v1.0, 1.1, 2.3+, Flac tags, APEv1 and v2.
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http://cogosx.sourceforge.net/ [...]

This is an experimental program for extreme stretching the audio. insanely extreme..
Requirements:
- audiofile library
- libvorbis
- fltk library
- portaudio library
- not required, but you can use the FFTW library
This algorithm/program is suitable only for extreme [...]

With djay you can control and mix your whole digital music collection with two realistic virtual, interactive turntables and both record and transmit the audio in real-time over the Bonjour network to other connected djays.
It supports all common file formats, such as mp3, aiff, wav, aac, caf.
The top features include:
• Real-time audio [...]

SoundDog is a simple QuickTime-based applescript droplet that acts as a sound inspector. It is designed to be placed in your folder toolbar so that you can quickly drag and drop any audio file(s) onto SoundDog’s icon to hear playback and view a detailed description of the file.
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http://rdiv.com/apps/sounddog/ (160 clicks)

DrDJ Free is a little application (80kb!) for DJ Wannabe’s. It can play any audio file QuickTime can play and allows you to fade between songs. You’re in control of the transition but DrDJ Free can do everything automagically too.
The on-the-fly playlist can contain an infinite (okay, so it’s limited by the size of [...]

RetroPlayer is a music player with which you can listen to music as if it was played by an analog record player. You can re-enjoy a piece of music that you have listened to for many times.
It’s awesome to create Lo-fi mixes, it has a speed dial and recreates some cool vinyl effects, just try [...]

miTunes is a programme developed to enable batch processing of audio and video files. It also permits the creation of playlists, editing playlists of media and full screen playback of video.
The heart of the software uses Jitter’s jit.qt.movie object to load and export quicktime media from one format to another. miTunes will only allow exporting [...]

Clutter is a small Mac OS X application that lets you put music CDs on your desktop. You can drag them anywhere — they’re really windows. Line them up neatly or put them in piles, it’s your choice. Each one looks like the real CD’s cover, and double-clicking it tells iTunes — or your SqueezeBox [...]

Hi! I’m a single app that bravely handles all your audio needs - I’m easy to use, but with gobs of advanced features ready to be discovered! I can play your Audio CDs, your MP3s, and your streaming network audio, I can encode, edit, mix, sort and manage, visualize and hypnotize. And now that I’m [...]

DeKstasy is a DJ application for Mac OS X. It provides automatic beat-finding and seamless beat-locked playback of up to four tracks simultaneously, contains a built-in mixer, and is so rock-solid you won’t believe it’s free software.
http://dekstasy.sourceforge.net/ (689 clicks)

XimpleMOD is an open-source project which produces a free & priceless audio player for Mac OS X, which is able to play module files, with a focus on sound quality and being simple but powerful at the same time.
XimpleMOD Player supports IT, S3M, XM, MTM, MOD, UMX and MO3 formats and uses the high-quality BASSMOD [...]

Taply is a simple soundfile player. The main difference between Taply and other players lies in the fact that it consists of nothing more than a tiny floating window and that it will quit after having finished playing. This way, (at least for me) it’s the perfect tool to scan quickly through a large number [...]