Xbox Music app "Sorry, we can't play this file on your phone" Error codes: C10103E8 or 800706BF

[Mark-F]

Xbox Music app "Sorry, we can't play this file on your phone" Error codes: C10103E8 or 800706BF

I'm getting error codes C10103E8 or 800706BF when attempting to play tracks on my Nokia Lumia 620 (OS version 8.0.10328.78).

All types of tracks are failing to play: tracks downloaded with Xbox Music Pass, locally owned MP3s copied to SD card, tracks streamed using Xbox Music pass.

Steps to fix in the short term are:

1. Un-install Xbox Music app
2. Soft reset (hold volume down and power button)
3. Configure correct date & time
4. Reinstall Xbox Music app from the store
5. Run Xbox Music app
6. Sign in with Microsoft account and wait for "updating songs" to complete

But, the next day the problem returns so this is not really acceptable!

Please help it's driving me crazy not to mention wasting my ?9 / month subscription.