I know this is an old thread, but I was wondering where we can enter in the API info from TuneIn as well, this thread answered my question.
However,
For those whom are in need of your API info from TuneIn.com / send an email to:
broadcaster-support@tunein.com
Request your Partner ID and Partner Key and include your station ID.
Station ID is on the end of your URL for your TuneIn station as: s-xxxxxxxx
Cheers,
Dave