We're happy to report that we recently released an update that fixed the rotated video on the Droid Charge phone. Please download the latest version from the Android Market for the video fix.
However, there is still an audio issue that prevents outgoing sound during a Tango video call. Our engineers are working on a fix but in the meantime a temporary solution you can try is to connect a wired headset to the device which should let the audio go through. We appreciate your patience as we work to resolve this issue.