I'd love to snag the Super Mario Land theme if it hasn't been taken somewhere in here already. Frankly I was shocked when I saw it available in the Google Doc (which I'm assuming is current). I know I've not got a remix published right now. I'm working on that. I'm rather new to this site. If you'd like, I'd be more than happy to whip up a rough WIP before being locked in for the track.
You can find the source here.
Also, I have some experience in web design if my skills as a remixer prove subpar. In fact, I'd be glad to do both.