Hi, I've eagerly updated to a G4 466 Mac on OS 9.1 only to find I can't get an Adat/Edit card to work right. I get this distortion sound on audio playback and figure it's a sync issue. The funny thing is that Sound Manager works fine and I get audio out on iTunes and Quicktime perfectly with output set on Adat PCI. On a PC it was easy to check DMA option on the hard drive. The Mac is all too new to me. Thanks for your help. Best.