I've been working on freeing up my schedule so that I can continue my work on homebrew games... I have a couple more games started for my Poker Night game that I want to make into a handful of casino games. Here is a list of items started:
Video Poker -- in the demo
Slots -- started, but not ready for prime time
Blackjack -- logic complete -- gfx, pretty rough at the moment
Here are a couple other options I want to add to the game:
Roulette
Texas Hold-em -- some game logic already started.
Basically this will be like other casino games. You will start with a bankroll and can move around the different game tables.
As for using .WAV files -- I can only use them for samples, not FM music. However, I guess it's possible to play music samples

In the past, I've converted some MP3s into WAV, then used my tools to convert the WAV to the proper ADPCM and tested the music (sample), which sounded pretty decent. I was having a problem with the audio cutting out after about 20 seconds, but that was with a hacked M1 rom from another game (patched to work with my V1 data). Now that we have our own sound driver, I may just test this out again...
Jeff