@Carls:
The best SID replayers I've found for the 68k Amiga are SIDBooster and MindSID. SIDBooster takes a little configuring to sound right, but once you've tweaked it, it sounds great, but it doesn't play all SIDs. For the ones SIDBooster fails on, I use MindSID.
What are the system requirements for SidBooster? I've tried it on my 030 A1200 but it crashes. There is no documentation in its archive.
Varthall