I just added a Groovy Freakz wallpaper pack. Groovy Freakz is a cool radioshow on internet, and plays great black music from the 70's and 80's.
This wallpaper pack contains wallpapers in the most common used formats, including cell phone formats. Download the wallpaper pack, unzip this, and choose the format which fits best for your screen.
Enjoy, and please vote for feedback. Thanks!