I found a player that works right with the ACA: Song Player (version 1.63 in Aminet, not the one of CWB39)
It plays even Mp3, but the sound quality with them isn't very good (don't know why). But if you convert them to Aiff you will listen to them really very very well, and it plays smoothly, letting you open other programs at the same time.
The only thing it lacks it's some skins, but I've found SongFace, that makes it look great.
EDIT:Amplifier works much better than AmigaAmp, but it's not as good as SongPlayer.
Last edited by Retrofan; 25 February 2011 at 09:24.