We just bought a site licence for Riff Riff
CD has an MSI on, but by default a) it wants to write saved files to program files. There's a setup app you can run on each machine to change that
and b) it doesn't add all the registry keys on install, but some on first run.
Anyway, I created an MST to fix that, change default save to H:\, and install in Audio on start menu and have no desktop icon.
Seems to work, haven't really tested it much.