Sound Volume reset after re-enable sound track

What steps will reproduce the problem?
1. Playing a movie file, like mkv
2. Max the volume to 4.0
3. Click the gear button right
4. Click the "i" icon
5. Uncheck the sound
6. Check the sound again

What is the expected output? What do you see instead?
Sound should be play as the volume set. But it played much lower. After 
re-adjust volume, it can be resumed.

What version of the product are you using? On what operating system?
1.3.1

Original issue reported on code.google.com by allenstc...@gmail.com on 13 Oct 2013 at 3:29

aata / movist

Sound Volume reset after re-enable sound track #295