So I have an old iPhone3G laying around and I'm looking for a way to repurpose it. I decided that it would be a great little device to play music in one of the rooms of my house. I plan to jailbreak it in hopes that I'll be able to turn it into an Airplay client, just like the AppleTV. Are there apps in the jailbreak community that can do this? Essentially, the iPhone would sit in a dock in this room, connected to powered speakers. I could play music directly from the iPhone or could stream to it from another iOS device or iTunes. Is this possible (with hacking)?