I've signed up for Google Play Music - testing the waters as I usually do with a new music service. One odd thing I've found is that on the Sonos app, under the Google Music , My Library, a bunch of random artists pop up yet they are not mine. Clicking on the artist comes up empty. My library on the Google Play Music website shows it's empty (as it should). However, I can't seem to get rid of this list of artists on Sonos. I've tried removing and re-adding the service. Re-authorizing the service etc. Anyone else having these issues?