Sonos stops playing

So I am totally new to this and I have only installed one thing on my hub with is my sonos speakers. I setup sonos to play when I leave the house (for my dogs). Anyways, I have checked on it while I am at work and it seems to play for a couple of hours and then stops. I loaded up the queue with a lot of songs so it would last all day but for some reason it stops playing. Any ideas why this happens? Also is there anyway to make it play to both the speakers instead of just the one?

There are several Sonis issues and integration related threads. Please do a search. One of them is here. Please ask in one of the active thread.