I've updated the SimpleInventory and CombatMusic addons.
SimpleInventory 0.8 Beta
This veresion adds several tabs to the bottom of the window, allowing you to view weapons and armor along with your inventory. These tabs also allow you to access your bank through the SimpleInventory window after talking with the banker. (Yes, the Bank window will still be displayed. No, I'm not planning on changing that soon.)
It also moves the tooltip to the left of the current item the mouse is over.
This version is supposed to allow you to drop items on empty slots in the inventory display, but that doesn't appear to be actually working right now.
Download SimpleInventory 0.8 Beta
CombatMusic 0.2 Beta
This new version allows you to set music for specific zones. Otherwise it's basically the same.