Is it possible to make something like a shutdown timer for the iPhone?

I like it very much to listen to some ipod music or webradio when going to sleep.

i would appreciate it, if i could set an off-timer for the iPhone, so that the music won't play the whole night (or drains my battery empty)

Thanks

Excellent request! I fall asleep with my iPhone listening to iTunes some nights, but wish there is a nifty way to better conserve the battery..

Check the Clock > Timer > "when Timer Ends" option... there's an option to "Sleep iPod"

Whoa! That's a good start - never realized this function.

Now i need something, that ends webradio after a period of time (by shuting down the device or by automatically turn into flight mode?!).

Oh right! Thanks for that great piece of heads-up!!