The trailer for the film Restless features the track “I’m With You” by the Stills. The movie is set for US release on September 16th, 2011.
The title of this implied that you had found more than one song from this movie. I have searched high and low for a track list from this movie, and trust me, I’m very good at finding songs. And no one has a soundtrack for this movie. If you truly are a “song detective” then you should have no problem finding all the songs from this movie. Not just the one from the trailer that you can find just by looking up the trailer on youtube.