[smokinn]

The room will indeed be quite general. You'll have anything from some (though probably few) 1st year students all the way to some (few again) professionals and masters/phd students. Most will be in between, skewing heavily to last/before last year CS/SOEN majors.

I don't feel very comfortable giving advice about the direction of your talk; I can only speak for myself. If you have questions I highly recommend you ask the director of presentations. That said, personally I think the case in favor of DRM could be quite interesting since I've never heard a technical person argue in that direction. (At least not while doing more than simply assuming the token devil's advocate role.) If you make a good case you'll definitely get lots of questions/objections after!