I've been trying out the Slacker software player, and signed up for the 7 day trial. So far so good, but how do you rewind to hear a song again? I can skip forwards as much as I like, but the rewind button remains grayed out. Also, the right side displays a list of the songs that have been played on the current channel. How can I go back and play one of them? Right now clicking on one does nothing, all I can do it ban it or ad it to my favorites list. I'm used to my XM Skyfi that I've been using for years, where I rewind to re-hear a just played song that I like, is this not possible on Slacker? Thanks!