I got my Dreamcast last week and so far i've Burned Mp3 cd's and Music Video CD's (VCD's)
This last console i owned was a Genesis so i'm pretty psyched
Infortunately it doesn't have enough cpu power to play mpegs very well. Its kinda choppy but still awesome.
I can't wait for the XBox, it has more power than my damn computer!! (I have a crappy computer hehe) I just hope its as easy to burn stuff for it.