I like the idea of downloading programs to your phone for listening offline, but it seems that even when listening to a downloaded program, it is streaming as long as a data connection is available. I download the Stern shows on WiFi at home so that I can listen to them in my car without using up my data plan, but I noticed the other day that while listening to the "downloaded" content it was eating data.

Does anyone know why it still streams the content even though I've previously downloaded it?