Preparation: Free download M4A to M4R Converter, set up it, run it. Return to iTunes. Right-click on on the music you have created and select "Delete" to delete the song (do NOT Move to Trash, choose 'Hold File'). One click convert any MP3…

One of many many understated features in Mac OS X is the flexibility to natively convert audio to m4a immediately within the OS X Finder - with none extra downloads or add-ons. Ogg Vorbis, to not be confused with the Ogg Theora video forma…