You can tune your radio to 89.9 FM or 550 AM for movie audio. Often times you can hear the audio from nearby neighbors. I'd recommend a portable radio or a radio app (one that uses the FM radio in your phone and not streaming audio) on your phone connected to a portable speaker through aux input. This way you don't have to worry about draining your car battery if you decide to enjoy the nice weather and keep your car off like most do.
There is a radio station that you tune into.
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