Marko Makela made the C2N interface, which has software to operate on PC, MAC, IBM, Unix, etc.
http://www.ktverkko.fi/~msmakela/8bit/c2n232/index.en.htmlIt will allow a host computer to act as a dummy datasette for a real Commodore 8-bit. Sort of like having a big hard drive full of tape images connected to your real Commodore 8-bit.
This is the opposite of what you asked for but still interesting.