How can i get to the file that contains audio list(s) so that i can at least print the "master" list to begin to find and download what i had...
One way is to go into your favorite all-encompassing audio album view, then hover over the tab to bring up the
Tab Menu > List Style > Details (instead of Thumbnails). The library contents should be visible in a long text list, even though you obviously can't play it.
The list can be re-ordered by clicking on headers, and columns can be added or removed by RMB on a header. When happy with it: LMB to select a line, select all with <CTRL><A>, copy all with <CTRL><C> (or use MC's Edit menu), and then Paste into an Excel or other spreadsheet to save off, format, and print.
Similar can be done with a Panes view, filtering for 'All' in every category.