Bluetooth is basically table stakes for speaker systems these days, but if you love how an older stereo sounds, it's easy to add Bluetooth streaming with this cheap Belkin dongle.
The tiny adapter plugs in via included RCA or 3.5mm cables to your speakers, and can can store six Bluetooth devices in memory for easy pairing. Today's
$24 price tag is the lowest Amazon has ever offered, and a steal if you don't already own something like this.
If you need a similar device for your car, I'd recommend the Mpow Streambot. It can only connect to two devices, and doesn't ship with an RCA cable, but it's much easier to charge in the car since it's powered by USB.
Update: Belkin has jumped back up to $29. The Mpow is currently $23 shipped though.
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