I just read a post in another forum by someone who owns a Z2 and apparently was able to get it to work with his Microsoft Zune. Would the F90 be able to do this or is the ipod the only thing that can be used? I definitely want to be able to control my music through the F90, like you can with the ipod.

You can't control the Zune (with the F-Series or Z-Series), but the Zune will output it's GUI over the A/V connection, so if you plug it into the A/V inputs on the back of the unit (F-Series or Z-Series), you'll get everything on the screen of the Zune on the display.