I am curious what the cheapest Sprint phone is that supports live audio? I have a 2nd line on my account that is out of contract and set up to be cancelled shortly. I would consider keeping it active if I had a phone that would stream an mp3 stream 24/7 in my vehicle (as opposed to using my Pre's line for streaming it). Any idea what would be the cheapest phone that could handle this task, like that I could buy off eBay?