^^^ gotcha, thx for the quick response
you can't run parallels or fusion on PPC machines
yeah you may have been thinking about virtual PC for running windows on PPC macs. the reason parallels and fusion only run on intel macs is because they are simply virtual machines not emulators. Virtual PC (which only runs on PPC macs) on the other hand will translate the x86 instructions to PPC ones which is extremely slow. Best to just get an intel one and boot windows natively unless you want to use a Mac FE.
head unit ... and you are ABSOLUTELY correct! It is a lot of work to do it well (I hired the job out and it cost $$$). I ran the Mac Mini's audio through the head unit's AUX port. Audiophiles will cringe, but I think it sounds great (I'm one of those weirdos who think their stock audio system sounds awesome. It's certainly not for everyone, though.