My friend suggested me this player as a one, which has good psychoacoustic model, better then Winamp. As for me, I didn't hear BIG difference between Winamp and XMplay. Maby this is because I tested it just a bit. But I can definatly say that it sounds not worse than Winamp. It has original interface (suggest ya to get Nullsofted skin to feel easy with it!) and, what is amazing, it is only 240kb! What else? Well, this playa was made by demoscrners, so make conclusions...

Link: http://www.un4seen.com/

Try it and say what do u think? ;-)