The "FM Transmitter 1" pictured on the site you linked to, is the same as the cheapo one I just picked up at Radio Shack (CAN$20) -- STEREO, but very short range (okay for in-car, but not room-to-room. And the sound is a little muddy, and it requires a 1.5V power source.

I think for decent quality, one may have to spend more -- the cankit one I linked to runs on 12V (can share empeg power), and uses much higher quality components. I'll get one and see how it sounds.

Cheers