Messed up music and slowdowns on Skies of Arcadia

[snowball]

on 2.0 RC 1, my machine is a dual core athlon clocked at 2.4ghz and we a geforce 7600. What configurations have people been using to get it to play perfectly? I have enabled the hack in the OGL plugin, which fixes some of the graphical issues, but the music is still stuttery and the game is quite slow during the opening sequence.