VLC doesn't like VBR video + VBR music combined, causes a lot of lag issues. Since it's a WMV there's no reason not to use media player anyway ;)
Would've been fine, but the music was getting compressed as CBR, and I couldn't have that.

Plays fine on other OS' though. ^_^

And yeah, it took a lot of time. If I'd had a faster rig & joined the compo before half way then I could've done a lot more. I'm happy with the results, a bit rough, but good enough.