HELP! Problem too complicated to put in title

I downloaded "Billboard Rock History," about 3,000 tunes. Unfortunately, my tag editor (Emusic Tag Editor v. 2.8) reports that about 1000 have ID3v2 tags but nothing in the "title" or "artist" fields, and the filename only contains the title. Then I noticed that the windows folder showed both the title and artist! So I dowenloaded another tag editor, "PZ Tag Editor." Same problem, about 1000 have tags but no entry in the artist or title. And of course the windows folder has no provisions to rename by its "tags" whatever they are.

Then I noticed that WMP (Windows 7) also contained the proper title and artist. After some research I found this site where you are all very knowledgeable about WMP - which I have never used. So I tried to go to the music library - I couldn't even find the tune!

Is there any way to make WMP rename the files to the artist and title that Windows 7 gets from God knows where, so I can get a tag editor to re-write the tags? This woulod have to be in a batch mode as there are so many tunes. Although not germaine to my problem, what the hell is going on?