samples/guiAndGfx/bitmapsAndKB: Replaced graphics with public domain images
samples/audio/DirectBufferPlayer: Fixed playing 16 bit sounds
samples/audio/DirectBufferPlayer: Added sample sound
samples/audio/Piano: Replaced instrument sounds by public domain sounds
samples/audio/PlaySound: Added sample sound
samples/audio/S3MPlayer: Added sample module
samples/guiAndGfx/childWindows: Replaced background image with public domain image