Music Controls Pro: handles music playback (Cydia)

Music Controls With Pro you can manage your music better. You can add new features to iOS 4 controls that let you better manage the songs being played on any device. For example:

• Video Background
• Remote server using another device to control music applications
• Open multiple applications at once music
• Toggles SBSettings
• Metadata via the Dock, displays the title of the song that's playing on the car stereo.
• Supported applications: Audiogalaxy, RDIO, Napster, and ZumoCast, etc.

You can download it for $ 5.99 in Cydia (trial 5 days)

You need to be jailbroken.