My friend asked me to make him a wireless audio cable so he could plug a little box into his speakers and plug a little box into the headphone jack on his laptop and it'll play the music on the speakers completely wire free. I was thinking about taking the transmitter and reciever chips out of a baby monitor and hooking them up to headphone plugs and putting a small rechargeable battery or something on it. Will a baby monitor be too low of quality? Is there something better I can use while still keeping it cheap?