If it's Amiga sounds it may be protrakker, noiseplayer or something like that. I would have a look on Aminet and see if you can find a program that loads the sample sounds on the floppy disk, then you will have a better idea of which sound files can be used.
I had a look at the files in a hex editor but I didn't find any header info.
EDIT: Looking at the Utils.doc it seems that you can covert SoundTrakker (ST) sounds to the Intromaker format.
Last edited by Arnie; 14 September 2015 at 16:43.