The only thing about using the cassette adapter (which is what we use) is that when it's running, it's noisy. Not a big deal, I know, but it's irritating. It's like that squeak in the car that you can hear, but you just can't figure out where it's coming from, and it's driving you nuts...
I dunno, maybe we should try a different cassette adapter and see if that helps.
I sure did prefer using the FM transmitter back in the day when we could do so!