@Potbelly(View Post) Well, I would, YouTube quality is less than crap to be honest. Also, you would have a nice collection of music that you don't need a web browser to play. Web browsers usually are memory expensive too, I'd rather prefer 20 MB of memory for Foobar2000 than 600MB memory for Firefox when I play a game. It's mostly a matter of ease and usage patterns...
It really isn't a problem with YouTube and Powder Toy, it's more of a speed issue. Have your browser closed and a nice sleek music player playing some internet radio, best of both worlds - no need to 'download' music and you get a better TPT experience.