Oh and I forgot to mention if you put any of the Protected Audio CD's in an Imac without the work arounds it locks the CD Drive and you have to take it to the shop.  That's right you put the new CD in your IMAC straight out of the Jewel case with no modification and your IMAC will eat it and will not release it.  I don't know enought about IMAC's to know if a good hardware hacker could remove it but on first guess I'm sure a cutting torch would remove the offending CD.