I got a skydock for Christmas. I am currently using a stiletto 10 in my car with a lifetime sub. When my stiletto dies I am planning on using the skydock. Hopefully when that happens I can transfer my sirius lifetime sub. Until that happens I would like to use the skydock with my iPod. From the directions it looks like you select the fm frequency from the xm skydock app. Can I use the skydock wireless, with my iPod, without an xm sub? Do I have to use my aux jack to use the skydock without a sub? My stiletto is currently plugged into the aux jack. Thanks in advance for any help.