MHI Driver Working!
A driver was developed to let programs which are MHI compatible use the Prisma.library and playback through the Prisma Megamix music card. I am pleased to confirm that it is now working with AmigaAmp on the Classic Amiga.
Here is a screenshot of Prisma in my A1200 running AmigaAmp, using the new MHI driver:
Thanks to Spirantho for his hard work on this driver.