You can sample them in 16 bits instead of 8 on your peecee, at a higher sample rate, and sample each instrument in multiple octaves (just make sure you can still use that sample rate on Amigas).
Need 8 bit? Maximize their volume and convert to 8 bit (make sure the samples don't clip). Also, don't let the instruments fade, use music software to do that (Amiga hardware volume settings are MUCH better for 8 bit fading).
Looks like I can set it for multiple Octaves and 16-bit sampling within the DSS8+. Though I sampled in 8-bit because I had Amiga specific use in mind when I made these.
Though, if anyone has any interest in these and would like me to re-sample, I will gladly re-sample them all again in 16-bit if I can figure out how to do it right on the DSS8+, or in Winblows.
Also,what do you mean by "make sure the samples don't clip"?