Flutterby™! : Is Audible DRMed?

I've been loving my little Sansa Clip MP3 player. I've been catching Coverville and Wait wait... Don't Tell Me! and the like. That last entry got me interested in the audio version of Barack Obama's Dreams From My Father, so I went out looking for it, and it seems like there are a gazillion people trying to make money from the affiliate codes at Audible.com.

However, I can't figure out what format they give the file to me in. I believe that there's some sort of funky-ass DRM in play. I could buy it on CD and rip it, though I really don't need the physical media, I'd really rather just buy one or more MP3 or Ogg files, but I'm not going to buy anything DRMed unless I know I can easily crack it.

Anyone know? And, Audible.com, here's a potential legitimate customer who's sitting on his hands because you're not forthcoming about such things. I don't know how many sales you'd lose if you dropped the silly file format stuff, but I know you'd gain one. Probably more than that, 'cause I think there are other things there I'd be interested in.