I'm interested in trying the UltraSound emulator included with DOSBox for the purposes of MIDI playback, but I am uncertain of the legal ramifications of doing so, as I do not and have never owned an actual UltraSound.

From what I understand one needs patches (sound sample) and the ULTRAMID loader, a part of Gravis' original driver package, in order to make it all work. My reading suggests that the patches themselves were produced by a third party rather than Gravis themselves, so that alone is a problem, but free patches are available.

ULTRAMID, however, is an even more interesting problem: While the original GUS driver package is readily available for anyone looking to download it, I see no license in evidence either included as a text file or as a screen in the installer. Short of somehow getting my hands on an UltraSound manual to see if there's a license spelled out -there-, I don't know what else to do. I even looked at a mirror of Gravis' own FTP server which contained hordes of GUS-related files, but still found no license.

Does anyone know what the license terms are, or would I have to seriously educate myself as to Canadian and American copyright law, and even possibly the terms of Kensignton's acquisition of Advanced Gravis?

Or have I missed an obvious source for the license to the driver software somewhere?