This is without a doubt the bee's knees plaer for OS X. It plays just about every format I've tried (not real, but that's Real's fault). My three complaints:

1) Give me the option to *not* autoplay DVD's when inserted while xine is running. When autoplaying via any other application xine will cause your DVD player to thrash trying to play in both players at once (particularly bad when in FrontRow and you can't exit)

2) When in full screen on one monitor how about letting me interact with applications on a different monitor. Keyboard won't pass through, and only some mouse functions work.

3) And most important: UNIVERSAL BINARY! I've been waiting for someone to make a binary build of xine as a UB for more than a year now. *Please*!