Your comments

I think my posts are less important than what RaMMicHaeL can really do and wants to solve our problem. I suggest you contact him directly through email, and try to figure out where the problem stands.
http://rammichael.com/about
Sorry for the misunderstanding. This is related to a previous discussion I had with RaMMicHaeL.
RaMMicHaeL said that there is more chance to tweak the Pinned Items than the Quick Launch. So I looked for a solution that will give a quick launch functionality through the Pinned items.
Hi,
Is it important to you, if it would be the QuickLaunch icons or the Pinned items icons? Because a similar request has already posted for the Pinned items icons.
http://tweaker.userecho.com/topic/164395-remove-gap-between-items/#comment-701610
What I was trying to say, I think maybe there are alternatives that can satisfy you.
Here is other solution. To edit the size of pinned items icons, so that if not active it is small and if active it would be in the regular size (regular button).

Rough Illustration:



As for trigger a media key (to play/pause music), you should use HotkeyP or Skin or Toolbar

http://sourceforge.net/projects/hotkeyp/
http://customize.org/browse/wmp
http://www.askvg.com/how-to-get-windows-media-player-wmp-taskbar-toolbar-back-in-windows-7/

As for Run Scripts or Apps. I agree it should be added to Advanced Options.