Well, I still don't think that it's going to do them any good. I still have my SounBlaster 128, with orriginal install cd. On there is a windows mixer replacement that allows me to record from the wave output... but unlike newer piece of software, this litterally is redirecting the analog output of the A/D convert to the analog input on the recording side of the A/D. So, no ripping prevention in the world will stop that card from being able to rip songs esentially losslessly. Here's another thing to think about... Linux. There's not such thing as a root kit for linux. If they wanted support for something like that, they would prolly need to get it included in the kernel, which I don't think could ever happen. Even if there are other ways found (there's always another way to do anything) there's always the option of people doing Linux From Scratch, or Gentoo, and leaving that part out. So, I highly doubt this will ever do anything more than increase the spyware count on someone's Adaware scan.
Also... I bet Apple will step onto the scene soon. They're not very tolerant of the RIAA's antics. Look at them with the iTunes/Pepsi commercials. Their big seller is iPods, and iPods are only good if users can rip songs from thier cd's to the iPod through iTunes. If the RIAA takes that away, Apple will be hella pissed... since iPod sales would drop wuite a bit. (What would the point be? Sure, you can buy music and send it to you ipod... but most people won't pay $300 for a 20 gig iPod, and then $6000 for enough songs to fill said iPod. Atleast the 20 Gig iPod woudl be doomed.)