Well, I'm not the best in the world with timing (assuming this means mixing more or less right?) but I've done a bit, and yeah, I use Audacity (though I've had to bounce to WMM a bit too). I have an example of my work in that regard if you're interested, should I post it or PM it if so?
Either way, definitely willing to help in some capacity if I can. Looking over the cast list now, and picking out who I think I could pull off maybe if I get that far.