ExoticA is an Amiga and retro gaming/computer music interest wiki including search-able computer music collections, game and demo scene information and plenty more.
Discussion about Amiga / C64 / Demoscene music and the ExoticA music archive. Favourite music, new rips, musicians, demo sounds, audio software. It's all welcome here.
I didn't think of checking Aminet either. I figured since the original Soundtracker was commercial, that the sample disks bundled with it were also classed as commercial.