If you're the kind of person who's always listening to music and wouldn't be caught dead headphone-less, pause that song for a quick second and check out Seamless. This lightweight app links your iPhone's Music player to iTunes on your Mac in a pretty clever -- not to mention Cupertino-esque -- fashion. The whole crux of it is the "transition," which simultaneously fades out a song on one end while bringing it to full blast on the other. All it takes to get started is a quick $0.99 download for your i-device and free Mac-centric companion app. Does it work as advertised, or is it really just a gimmick? Head past the break for a quick rundown of just how seamle
