Standalone streaming device
I've been using older smartphones connected to the stereo in my garage and my living room to stream music. It works great except that the phone has to be plugged in at all times. Both of the phones that I've been using now have swelled batteries and I don't feel comfortable using them anymore. Is there a budget standalone component that can serve that same purpose without risking burning the house down? Less than $50? Thanks.
I live in Washington in the United states, and I am using an older Sony amplifier-receiver combination.