http://sbooth.org/Decibel/
What is Decibel?
Decibel is an audio player tailored to the particular needs of audiophiles.
Decibel supports all popular lossless and lossy audio formats including FLAC, Ogg Vorbis, Musepack, WavPack, Monkey's Audio, Speex, True Audio, Apple Lossless, AAC, MP3, WAVE and AIFF.
For lossless formats such as FLAC and WAVE, and for Ogg Vorbis and specially tagged MP3 files, Decibel supports gapless playback with seamless transitions between tracks.
Decibel processes all audio using 64-bit floating-point precision, providing the highest possible playback quality for files sampled at all bit depths.