I want this badly, so I'll package and maintain it (including Diablo version) if nobody wants to take it or has started work on it (tso? tomaszd?)

Music probably uses timidity. Since that would take quite a lot of CPU I suggest pre-rendering the music. Note that any port of this CAN'T distribute the game data files, which you will need to provide.

Thank you very much for pointing me to the existence of this! It's still a work in progress I see, but great progress so far!