I have recordings and they play awesome on the Roku as does watching live TV. However, when I try to watch via my.tablotv.com in chrome on windows 10 or using the Tablo app for Android (latest has been downloaded) I get a great picture but no sound.
You probably have 5.1 enabled. Try turning it off.
5.1 is a global setting. You can’t play 5.1 on Windows (unless you’re on the Edge browser, yet some people still have problems), and you can’t play 5.1 in most native Android apps. VLC will play it.
Interesting enough, I found that if I am outside of my network watching on browser, it works, probably because the down-grade in quality I have selected for streaming outside.