Q. I'm planning a road trip in an older vehicle with a CD and cassette player, but no AUX jack. I have a cassette adapter with a mini-plug, but I've become accustomed to playing my music from a USB stick in my newer vehicles. Is there some gizmo that can let me use a USB stick through my setup?
—J.K. Oakland, California
A. You can do this with a car Bluetooth RF adapter with a USB port or TF card slot. These devices transmit a radio signal to the car radio to play music from a TF card or your smartphone’s Bluetooth connection. You select the frequency on the adapter to find one without any interference from local stations, then tune the radio to match. I’ve found the sound quality to be even better than a cassette adapter. If your car has a cassette player it is very unlikely that it also has Bluetooth. As an added benefit you will be able to connect your phone to the adapter via Bluetooth and make hands-free calls.
