C-SPAN Radio for iPhone app streams audio in background while other apps are in use
The latest version of the C-SPAN Radio app (v.1.1, free) for Apple’s iPhone and iPod touch now offers "Background Play."
Upon running the app, users are asked if they’d like to "play stream in background?"
If you answer "yes," the app’s "Background Play" will use "Mobile Safari to play the station’s stream so you can use other apps at the same time."
The free C-SPAN Radio app for Apple’s iPhone and iPod touch is available via Apple’s App Store here.