Randomly my iTunes Radio on my PC iTunes stops working....

Randomly my iTunes Radio on my PC iTunes stops working. No internet issues. Anyone know why? It shows the song in iTunes as if it was playing, but there is no sound? Not a speaker issue either. It plays one or 2 songs fine, then the next one just has no audio. I've tried clicking on other iTunes Radio stations I have favorited and those show as if they are playing - but no audio.