I've played it for the first time also on an Amiga computer. Great game and especially the tune from the first level was awesome.

Probably not the number one source but I like to crawl Presto Music's Jazz homepage from time to time and buy there something. The good thing there is: You can get many albums as FLAC downloads, some even as HiRes-FLAC: http://prestomusic.com/jazz

I've simply deleted everything.