| | Re: tunein record
I did a little searching. Apparently the capability to record was added at some point. I saw several sites that address converting the recording to mp3. I saw one page that indicated the tunein file is m4a.
One thought I had was that the files may be encrypted. If the OP just copied them over and doesn't realize it, that might be the confusion.
Anyway, there appear to be a number of places that talk about dealing with the recorded streams.