Background image is taken from standard multimedia background. With BlackPlastic theme it works really nice, if another theme gives trouble you can change it by replacing /opt/qradio/background.png symlink with another link or a background image.

For the slider, there is FMRadio to tune it using fingers. Manual input and stations list can be accessed from menu. Last one can be accessed from the bottom left button aswell.

Will type some instructions at first post when I'm done fixing some scripts.