What's up with Project 64's sound?

OK, well today I downloaded Project 64 version 1.6 for my netbook, which is Windows 7. I downloaded quite a few ROMs with it and I've noticed that the sound is all screwy on all of them. I've tried everything. I've switched the audio plug-ins repeatedly, all of them do the same thing (I also have Azimer's Audio Plug-In), I've tried syncing the game to audio and that improves it a little bit but not much. I don't know what to do. Everything else works fine it's just the audio that's messed up. It also mainly does it with Donkey Kong 64 and Conker's Bad Fur Day although it screws up with all of the ROMs. The audio also sounds slowed down with a bunch of popping/static sounds in the background. Please help I don't know what to do!!!!!