I think I found a guy in Europe who will sell me a SID2SID, fully assembled. I would just pop the SID chips in and I will have a Commodore 64 with 2 SID chips in it. In MSSIAH, that will give me 6 voice channels instead of 3! I'm working out the details now.
I never could figure out how to directly add videos here. Next time I'll just post them to YouTube and be done with it.
Music with the 64 has been a slow process as I've been getting busier at work. Hopefully very soon I will have a few projects sketched out.