Apps/Progs download, Music doesn't.
 

This is bugging me, because I can't pull a resolution to it.
When I search for music, it comes up fine, when I click to download, I get a window saying it has encountered an internal error.
When I download programs or applications, it works perfectly fine.

Is there a resolution to this?
(Sparing the following:
-reboot
-reinstall
-Update)
Thanks.

Try deleting LW's preferences folder (when LW is closed). Points 2 & 3 here
Fixes for LimeWire

Doing this will kill all of your settings within tools > options. Once you restart LW, you'll have to go through & set up your options again;)