One of the coolest things about the service is that the popup window that plays the song contains a permalink to that song that you can send out or post to your blog. Finally. It was always a hassle trying to find links to songs on the artist's website, on Amazon, or on some other site. (Don't they want people to buy the song? Why was it so hard?)
Let's try this out with some random tracks:
Jason Mraz—Plane (light rock/pop)Amon Tobin—El Cargo (electronic/drum and bass/jungle)
Linkin Park and Jay-Z—Encore (rock/rap)
Imogen Heap—Cumulus (instrumental)
Imogen Heap—Headlock (pop)
Okay, I had better stop before I hurt myself.
The sample quality isn't great, but at least it's on par with the usual 30-second samples you normally find. Probably 64kbps MP3.