The Rampage: World Tour has no sound at all. I read on some forums the game had some problems with emulators but most of the times they only say slow downs. Could this be fixed?
First of all, you need to consider that all "Midway Wolf Unit" games* are in "pre-alpha" phase... at the current stage the audio sub-system (ADSP-2105 + DCS Sound System) isn't emulated by FBA, maybe in a next release, but I don't think in a near future...
*2 On 2 Open Ice Challenge, Mortal Kombat 3, NBA Hangtime. NBA Maximum Hangtime, Rampage World Tour, Ultimate Mortal Kombat 3 and WWF Wrestlemania.