Fixes: 1. Fix bug: When enable AEC, The message still appears next time even you select "do not inform me next time" 2. Fix bug: There will show "Vista" wording in warning message in control UI under WIN7 OS. 3. Fix bug: The installing process bar doesn't run as its actual progress. 4. Fix bug: Power DVD hot key cannot start Power DVD9. 5. Fix bug: Mute tooltip is covered by quick appliance column.