Thank you for the replies. There is a small but nice following here. I will still poke at this issue as time allows. I ran it again the other day, this time with other people in the game, not just me. The volume on TS cut down again, with another player in the game, using Firefox. On that note, you are likely correct about this not being a roll20 issue. I think the problem occurred when a youtube video opened in another tab, so that would indicate Windows being the culprit. To Ryan H, and Pat S, I checked the win comm setting, sure enough, was set to reduce volume by 80% WHEN a phone call is in place. There was no call taking place, but there was an obvious reduction in volume, so we shall see. I set it to do nothing, and now just need to wait for people to get home. Again, I will be using Chrome for the game, and surfing tabs as needed on Firefox. Now I just need to get my Spot Check on a hotkey macro. Was able to figure out Initiative after a tutorial and some tweaking.