I just bought a mac book, and as I'm new to the sl world, I'm also new to the mac world. For some reason, I can't get the the short cuts for the next or previous track to work... they all use the alt key... all other shortcuts work. What am I doing wrong?

forgot to mention, when I pess any of the four shortcuts with the alt key, the highlight moves to the very last track in the list

Are you using SSL version 1.6.1?