OctaMED Soundstudio 1.03c is the last version to appear on the Amiga. It can be freely downloaded, as Darth-X said, off of the official OctaMED website.
Before the 'jump' to the Soundstudio moniker, OctaMED got up to version 6. SoundStudio's differences from earlier versions are not to apparent on the surface, but immense if you are a huge MED fan.
Version 3 being the last you've tried, you'll be bound to fall right in love with SoundStudio - up to 64 tracks, support for many soundcards (unfortunately, no AHI support) for using 16 bit samples, Paula can be used in 14-bit mode, multiple command pages, MIDI slave mode, and much more...
The interface is still familiar OctaMED style, so if you're used to it the upgrade to Soundstudio will be a breeze.
I also own the Windows version, and while it is very good and packed with a few more features (like being able to import MP3 samples) I hardly use my PC very much at all these days, so it gets little use. But if you're comfortable using Windows, I'd also highly recommend purchasing that version as well.
