The Genius 600 is the same as the Sunwave SRC-1600 and the pre-programmed code list for that model can be found here. However, where your player fits into this grand scheme (assuming it does) I do not know, and with no code search function I fear it's going to be a somewhat difficult task finding out.

Perhaps the best option would be to get in touch with DViCO for a replacement remote to learn from.

Edit
I've checked the files section and found a couple of Pronto files for the Tvix, but of course you'll need to know someone with a Pronto you can borrow.