Currently Being ModeratedApr 28, 2013 1:17 AM (in response to tjemck)
Having done a bit more digging online, it seems that the iTunes widget was discontinued as of Lion. I intend to contact Apple Support to confirm this... but for now, it seems the closest thing to the iTunes widget that actually works on Mountain Lion is the "iTunesTan" widget.
This link provides a second link to a download of the iTunes widget taken from Snow Leopard: http://apple.stackexchange.com/questions/19088/how-do-i-get-the-itunes-play-cont rol-widget-back-in-dashboard
If you have backups of a Snow Leopard system, you can also get a copy of the widget from your backup... but I have done that on Mountain Lion and the widget fails to work, so unfortunately the iTunes widget appears to be obsolete as of Mountain Lion.