SUCCESS!!! A little dicey...but not too....WinMerge was invaluable.

Now, just FYI I have a clean install of 1.3.9h and no mods added. As far as I know there are no ill effects. I did change the button name to "Add To Cart" and the return to shopping function takes me back to the Product Listing page to grab more tracks. Excellent!

Thank you again.