How do I convert old m4p files to open aac or mp3 format?
I seem to have a number of older m4p files, and while this isn't an issue to play via iTunes they won't play when I try and stream via Sonos. How do I convert these files to something that Sonos will accept like aac or mp3? I subscribe to music match and apple music too.
iPhone X, iOS 11.2.5