BTW: I forgot I had these, you might actually find some interesting things on these disks.
I've been having a root around these disks, and boy is there loads of stuff on them. Shame I can't do anything with Stonecracker and Crunchmania files! But plenty of stuff to be getting on with. Thanks for the linky's anyway!
I have been getting plenty of mods so far, but because its Amiga stuff, I'm having a lot of trouble getting credits from the productions. Also, because a lot of the files are tracker packer/player61 format, the mods have no credits either.... (good job for Prowiz though)...

Ok, now for all things XPK....
I noticed a lot of modules on Dzwieki_Moduly are in xpk format. I would check ModPlug Player's helpfile if it actually worked, but seems its just another thing that was broken by Vista

Seems MPP plays mods compressed with xpk and powerpacker formats, as long as the file is associated with MPP. I presume its supported these formats for years, I don't really remember tbh, been so long since I checked the stuff the player supports, but couldn't find any reference to it on the web. Didn't notice this before, but I accidently renamed a whole load of them in TotalCommander by mistake and didn't notice until I viewed the files they were compressed in xpk.
I'm not comfortable with a load of mods being packed like this, might be loads I don't know about already, but to be honest, I'd rather have them in the uncompressed state. Apart from emulation, is there a way to decompress xpk on the PC? If not, I will have to check each file against the usualy lists, individually.
The Powerpacked files are not a problem, I can load those into Milkytracker and resave them in uncompressed size.
I have a ripper on the PC that can detect and save out Stonecracker and Crunchmania formats. Is there a util that can decompress these formats on the PC or a ripper that can search within these formats as well?