I have the same problem some other reviewers had: the audio was extremely low unless I manually adjust the cassette. It's not that easy - you have to stick your finger into the cassette slot while the adapter is in there, and wiggle it forward and backward until the audio adjusts. But that doesn't always work. If that doesn't work, you then have to turn your hand over and use your fingernail to catch a ridge on the adapter and lift it up a bit. I'd rather not have an accident on the highway by either (1) fiddling with the audio, or (2) smashing the adapter into little pieces while I drive.Hundreds of songs on the ipod and no way to listen while you drive...