Here's another skin patch for Moahdib's FSR Skin. This is the skin I use in my car. It's pretty slick, but resource heavy too.
Patch file
(download)
FSR Skin
(link)
After installing his skin, just replace the menu.txt file in the skin's folder. This will modify the existing audio sidebar buttons to point to smart playlists instead. Modify the menu.txt file to use your own custom queries and/or restore some of the original quick links to GPS/weather/etc.