If you go over to mac then you`ll need to get new software unless the cds you have are hybrid images aswell PC/MAC. Also if you use alot of software then theres not as much available on mac format compared to pc.
The audiophile should be compatible with a mac, just check on m-audio website. I know the delta series can be used on either machine.
I wouldnt jump on the mac band wagon just yet. Wait for the 64-bit processors to hit the market properly. Alot of the fact is the OS that the machine runs. Windows Os`s seem to be really resource hungry where as Mac OS`s can run smoothly without eating up as much resources.
But its up to you to make the choice. PC or MAC
