I love the mixtape designer - well done guys! My favorite is the "gloss" slider. If only every web2.0 website had one of these so you could turn it down (and save the batteries)! :P
Just ridiculously solid. Not very often I check out a site and inadvertently end up spending over an hour playing around. Although, I wish it hadn't been 2 in the morning when I stumbled upon this. Thanks for the creation and good luck.
Mixwit == superhit. These guys are underground but judging how viral it is and how much their traffic is growing its going to be huge. I don't often say this. Watch these guys.