HUGE DISCLAIMER:  The following is my personal opinion, and in no way reflects the beliefs of my employer.

DRM is a misnomer.  There are no "rights" to manage.  There are vendor-applied "policies" to manage.  ...and this is where things get broken.  Come on DRM vendors; come on media companies - have the balls to say, "DRM's are good for us, and may be only slightly intolerable for you."  I want a DRM system that gives me the same "rights" for bits-based content as I have for atom-based content.  Unfortunately, I don't see anyone focusing on that right now.  Scoble's post was quite enlightening - it sounded like the Windows Media folks gave him a good serving of their kool-aid.  Cory's post is interesting - thanks for bringing up the VCR issue, since the similarities are spot on.  Dear Hollywood, etc - please admit that the video rental thing has been good for you.

In the good ol' days, I could buy a cd, open it in the parking lot, and play it on my car's cd player.  When I got home, I could play it in my home stereo.  Then I could take it into my office, and play it on my computer.  Then I could take .  OK, that was for stuff like Peter Gabriel's So cd.  For crap, I'd sneak into some random MSFT building and play Watch the Sparks Fly with the cd and a microwave.

Hey marketers - I only use one, maybe two devices.  Plus, with the MP3 format approaching ubiquity, no other format can compete on sheer numbers of devices supported.  And when I think "selection" I want two things - lots of codecs supported, and the ability to flash new codecs onto the device at my discretion.  I want ease of use.  When I'm in the car, broadcasting from a device through my car stereo is fine - as a drummer, my ears are shot anyway.  I also look for the ability to get content on and off that device quickly.

Long ago, in a galaxy far, far away, I got to sell IBM PS/2's.  They had a far superior bus architecture called Microchannel.  Just like a mainframe - technically far superior to the existing ISA bus.  And it failed miserably.  Lock-in strategies just don't work - consumers aren't that stupid anymore.

As for the "Use WMA, cause it's smaller", what a laugh.  I rip to Shorten first, and then when I need to, resample to 256K MP3.  I have multiple 120GB drives on my computer.  My Nomad Zen has a 40GB drive.  Space is not a primary concern of mine. 

Bottom line - I use the MP3 format, because it most closely supports my listening habits.  If the WindowsMedia folks want me to move to WMA/WMV, please focus on my listening/viewing habits, rather than focusing on the habits the media moguls.