Hello
It seems like the music on mega race 3 loops every 5-10 seconds, is it supposed to be like that? (I guess it could be as it's only 500 mb and the movies are also very short).

Hiya. I had this too - try turning your sound acceleration to "basic" or "none" (it's buried in some submenu somewhere, the easiest way I found is start -> run "dxdiag" -> let it churn -> "sound" tab). It fixed the problem for me, so now at least I can enjoy the music while wrangling with the terrible controls :)