[kpb57]

It depends what you mean.  If you long press a song and select Share->Export files, one of the options is to export audio. This will just copy the audio file(s) to the output directory you selected for the export. Is that all you are looking for? Or are you wanting MobileSheetsPro to convert audio from one type to mp3?

Thank you very much! As I suspected, just too dumb to find it.