Macbook Pro not playing MP3 voice files in either Itunes or Quicktime
Hi
I have a MacBook Pro running MacSO High Sierra 10.13.6
Yesterday I was transcribing some research interviews (MP3 files) which were working perfectly using Itunes.
This morning I can't listen to any interview files or even personal music files. Neither Itunes nor Quicktime player is working. Volume controls seem OK, but the progress bar doesn't move.
How can this happen, when it was working fine yesterday
Can anyone help please ??
With thanks.
Sue B
MacBook Pro 13″, macOS 10.13