VBA to create userform that shows source excel files in PPT presentation (64-bit)

I realize this is an excel forum and my question is more PowerPoint related but was hoping someone has dealt with this issue before.

I am trying to create a userform similar to "Edit Links to File" in 64-bit PowerPoint that lists the source files (with address) for all excel charts, etc. linked to my PowerPoint presentation - but ONLY displays the address of the source file...not an itemized list of every single item linked.

For example, I have a presentation with over 40 slides with over 80 linked items from several source excel files (charts, etc.). If I go to File and select "Edit Links to Files" the pop up window shows every single linked item. I want the userform to show a list of only the source files of the linked objects. This way, if I want to quickly update all links I know which source files I have to open and then "Update Links" when opening the PPT file. The next step would be to be able to select a particular source file from the list and change it to a new source file.

The code needs to work in 64-bit PowerPoint as we recently upgraded to 64-bit MS Office. I've seen code that uses "MSComctlLib.ListView" but understand it doesn't work on 32-bit applications.