Streaming radio and podcast aggregator app Stitcher is today updating both its Android and iOS apps. The new Smart Station feature is similar to iTunes Genius or Pandora, and offers recommendations based on the stations and podcasts that you've been listening to and rating. Additionally, the app now displays the cover art for what you're currently listening to on your lock screen, and Stitcher finally added a sleep timer to automatically mute playback after a set period of time. It's available now for free on the iTunes App Store and in the Google Play Store; Windows Phone users are still out of luck.