QA:Testcase desktop volume

Description

This tests the basic volume management using keyboard/media keys on a desktop.

Setup

1. Browse to following web page: www.bigbuckbunny.org.
2. Start playing any of the 'OGG' labelled files.
3. If you do not succeed in playing files mentioned above, try to play any other source of sound (stream video, on-line radio, ogg file etc.).

How to test

1. Use a media key on our keyboard to decrease the volume to minimum.
2. Use a media key on our keyboard to increase the volume to maximum.
3. Use a media key on our keyboard to mute the sound.
4. Use a media key on our keyboard to unmute the sound.

Expected Results

1. All the media keys should work as expected.
2. There should be some visual feedback after pressing media keys.