Audirvana Free is the counterpart to the more full-featured Audirvana Plus mac application. While the interface may be a little hokey, it is the best sounding audio player I have ever found. Seriously, everything I listen to just sounds better with this player. The Gapless track RAM pre-caching, FLAC support, and system integrated volume means you are always listening at your system’s full potential. My biggest gripe is that there is no Last.fm scrobbling, but that is a fairly small issue.
In light of this I have switched over to Vox another lightweight mac audio player. Although I find its appearance a little stark, it stays out of your way and plays just about any audio file. Best of all it has menubar control and IT SCROBLES TO LASTFM!