change file type

i am trying to find audio files for itunes without changing my default audio player (it is not itunes). i am only getting mp3 files and i want m4a for itunes

Try using the All Types search, look for artist - m4a or album - m4a etc. You can try looking for song title too, but you might find that you see more spam that way.
You can also use the Audio search, using artist - m4a etc but the All Types brought up way more results (looking ok, not like spam) for me

thanks a bunch