I have been running Protools 7 HD on a Mac G4, with the digidesign 192 i/o, and the TDM plug-ins for several years. I now have a new Mac Quad-Core Intel Xeon and I now have a new core card for the 192. What version of Protools can I get away with. I don't need to go to version 10. I do need to be able to record sixteen tracks at a time. I believe it is 8 or 9 but two questions: Does it have to be HD? Does it have to be TDM plug-ins? Anybody?? HELP!!!