New audiophile media player Audirvana is an opensource project for an audiophile player for OSX.
http://audirvana.googlecode.com


* Native playing of FLAC, libSndFile (WAV, AIFF, ...), ALAC and other quicktime formats (AAC, MP3, ...)
* Direct sound path, directly to the CoreAudio HAL for pure bit perfect sound
* Audio Device exclusive access mode
* HAL I/O using DAC native physical formats "Integer Mode" (instead of CoreAudio 32bit float)
* Automatic sample rate switching
* Up/Oversampling capability
* Plays completely from memory
** Tracks are loaded, decoded and sample rate converted in a memory buffer before being played
** Minimizing CPU and hard drive activity to lessen sources of interference
* Gapless playback by using a double buffering mechanism (playing track and next track)
* Transparent split load for loading tracks of any size
* Background tracks loading/decoding (including sample rate conversion)
* Playlist (m3u & m3u8 formats) load/save
* Handles Apple IR Remote
* Automated updates downloading (using Sparkle)