Update: Grand Prix 4 plays almost flawlessly with Catalyst 10.6 and WINE 1.2rc3.. HOWEVER, over the past few releases of WINE (audio work), I've noticed that partly through the playback of Grand Prix 4, the audio suddenly stops. Prior to 1.2rc3, Grand Prix 4 used to crash shortly thereafter. However, since WINE 1.2rc3, after the audio stops, Grand Prix 4 continues without crashing ... just without audio. Only restarting Grand Prix 4 restores the audio temporarily before it repeats the pattern. I get following error from the console: err:mmtime:TIME_MMTimeStop Timer still active?!