SoundTracking allows you to share the music you're listening to as you're listening. First, sign into the app via Twitter, Facebook, or Foursquare; friends using the service are automatically pulled into your feed. Then, identify what you're listening to using search, the app's song-recognition feature, or even what's playing on your iPod app at the time. Then tag your location — right down to a specific venue if you're listening to live music. You can even check in on Foursquare at the same time.
Users can also add photos to posts, like and comment on other friends' selections, and see which songs and locations are trending. SoundTracking is available free from the App Store.