I definitely remember short 2 or 3 second clips of relatively high quality music being played through our family’s IBM XT’s motherboard speaker at one point using a demo we got from a BBS or the Public Domain Software site in the mid-80s. It wasn’t easy but some madman made a proof-of-concept that did it and it was incredible at the time.
Anecdotally my boss at work bought some stuff from there with her debit card and had her account hacked, fraudulent charges etc. Another friend has bought things from there with a throwaway card and likes it lot. Caveat emptor.