I remember playing mp3s with "play" I think. I used to boot with no startup sequence and switch all CPU burst/cache on etc. and it was still pretty poor. If you are going down the accelerated route, consider an A1200... you can then go for 060 power and AGA. The Accelerators on the A1200 (esp 030) will be cheaper than an A500 030 I would think - the supply and demand equation.
