http://addons.teamspeak.com/directory/addon/overlay/ts3overlay.html

This seems to be working with MWO. Easier to see on screen than on a G13 or keyboard.
You set a hotkey for positioning, I used F6. I don't think the game uses that. You can then position
it where you want it in the game. Set colors for talking, muted, silent etc.

Last time I tried one it caused the game to crash, but that was 3 years ago. I'll be testing this more tonight if anyone is on.
So far so good with it.

Ah cool, yeah I used it awhile back and stopped for the same reason, will revisit it.

I left the game up with TS for a while when I was away. Looks like the plugin crashed at some point. I'll see how it does while remaining active though.
Looks like flash crashed, which I assume has something to do with it. Might not have been the plugin itself.