Merge pull request #56 from Ragnar-F/master

Changed licence to official standalone HTML format
Merge pull request #58 from Uberi/sound-functions

Squashed to omit reverted changes/additions from commit history.
Revise SoundSet/SoundGet DeviceNumber parameter

Also:
- Fixed #Ex link in SoundGet.htm.
- Fixed typo "for >and< playback".
Revised KeyList for clarity