[Roy Dennis]

You should be able to use windows search, if your using Windows 7 enter the search string in the bottom window above the start button, press return then click the "see more results" that appears above it. When that window opens select "computer" from the row of places that show across the dialog, you can also search individual drives by going to start/computer highlight the external drive and enter the search string in the top right hand window of explorer.
If using older version of windows go to Start/Search and enter the string in the dialog.

What I would do is go to the Tricerasoft.com site again and find one of the songs you downloaded and note the disc id and use that as the search string.

Once you find one the path to it is displayed in the result but if you right click on it then select "open file location" it should take you to the folder and probably find all the others there as well.