If you don't have AUX input, one of the numerous weirdly-named bluetooth cassette adapters from the same China factory sold on you know where has been working fine for two years. Small downside is when the little Mothra lady inside starts going "low battry!" it will shut off within a minute, but it will charge to 100% very quickly. It also works as hands-free for phone calls. There's a mic on the antenna wire that needs to stick out of the cassette slot.

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