Having trouble with your audio settings staying put?
With Jabber open click the settings ICON at the top right. Then click on "settings" then "Audio" on the left side of the new window.
Make sure the box for "keep using the current microphone or speaker" is checked. Click "Apply" then "OK"
The next thing would be to scroll down a little and click on the "Advanced" button. Then click or highlight what you want to use for speaker, Microphone etc. and use the arrows to move them up or down as primary. There should be a check mark next to them when finished.. Click "Apply" then "OK"