Icons are from Kristal kde's theme
audio-player is fmplayer from:
website: http://framaplayer.sourceforge.net
author:
license: GNU/GPL
note: I am thinking of using player from www.jeroenwijering.com
video-player is flvplayer from:
website: www.jeroenwijering.com
author: mail@jeroenwijering.com
license: Creative Commons License http://creativecommons.org/licenses/by-nc-sa/2.0/