Hi there @richf2021, Thanks for reaching out, and welcome to the community. Sorry to hear about this issue on your system. Are there any updates that took place before this issue happened? Is it happening or have you tried it on another device controller where you have the Sonos App?

Let us know how it goes and we're here to answer any further questions you have.

hi.

MAC OS has updated, but that was after the issue started.  I have tested using IOS SONOS 2 app on iphone and that has the same effect (back to the beginning of the while book). I suspect I did run the Sonos Updates from within the app recently.

Regards

Hi there @richf2021, thanks for the update and the information that you provided. We need to check on this further, I'll ask you to kindly contact our phone support team for further assistance and more in-depth troubleshooting steps. They may request remote access for screen share on your device controller to replicate and check on the issue to provide options to resolve the concern. 

Keep us posted on how it goes and we're here to answer any further questions you have.