headset.icns + headset.ico + knowthelist.png
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Icon Author: Iconshock - Icon Sets

HomePage: http://www.iconshock.com
License: Commercial usage: Not allowed

clear_left.png + database.png + settings.png +
volume.png + slider.png
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Artist: Oxygen Team
Iconset: Oxygen Icons
License: GNU Lesser General Public License

folder.png
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License:	 Free for commercial use
By:	Media Design - http://mediadesign.deviantart.com
Icon set:	Hydro Pro

vinyl.png
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Artist: Nando Design Studio
Iconset: Be the DJ Icons
License: Free for personal desktop use only.
Commercial usage: Not allowe

DJ.png
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Artist: TurboMilk
Iconset: Gadgets Icons
License: Free for non-commercial use.
Commercial usage: Not allowed

search.png
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Icon Pack:Batch
Designer:adamwhitcroft.com
License:Freeware

shuffle.png
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Icon Pack:The Clean Desk
Designer:Alfred Pereira
License:Freeware

list.png
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Symbolpaket:Human-O2
Designer:schollidesign
Lizenz:GNU/GPL

play.png + pause.png + 
backward.png + forward.png +
stop.png
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Designer:mstephan
Lizenz:GNU/GPL

down.png
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Designer:Qing Li
Lizenz:Creative Commons 
http://ijungle.net/