Alrighty, Here goes...
Alright, I think the best sound studio there is for the amiga is Sound Tracker, when I had my amiga back in the day that's all i used to use! it was the best thing I had ever laid my hands on!
Mind you if you can get a hold of it let me know, you will also need the ST-01-STInfinity module disks that go with it, they have all the samples on them that you'll ever need.
Most of which will be other peoples samples that they have ripped/stolen from numerous places e.g TV, Video, Computer games.
Please let me know if this helps anyone.
P.S Pro Tracker is also another good program that I remember using, it had the same layout and everything as Sound Tracker :-P
Peace out,
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