Ok,
I know that you just do a right-click somewhere around the GUI, then a menu comes up, then you can configure it. The bad thing is you can use only the PAULA audio. I think the 44khz might work nicely, but I never had a CPU powerful enough to try it out on. Prayer2 was the best mp3 player I messed with on my Amiga 1200 and takes alot less CPU power then the rest available.