Rdio, one of my favorite streaming music services, has just updated its iOS app with a new interface, the ability to sync music across devices and apps, and–excitingly–a second screen feature that lets you control other Rdio apps (like the one on your computer, for example) from your iOS device. So cool!

Discover your next favorite song with Rdio, a service for streaming unlimited music—on-demand and ad-free—on your iPad, iPhone and iPod touch. With over 18 million songs available and more added every week, you can immediately listen to popular hits, new releases and old favorites. When you’re in the mood to hear something new, follow friends, artists and tastemakers and let their favorites find their way to your ears. Build a playlist—solo or in collaboration with friends—then sync everything to your device for offline listening.

via: GigaOm