This sounds like a fairly simple job using Dos & Excel (or LibreOffice)...

01. Use Dos to create a text file of the directory with the mp3s...
(dir *.mp3 /O:N > ArtistsNameSongTitle.txt)...
02. Open ArtistsNameSongTitle.txt in Excel (or LibreOffice) using appropriate Delimiter options...
03. Delete unnecessary columns (Date, Time, File Size, etc)...
04. Use formulas to switch out & reorder the Artist Name & Song Title to Song Title & Artist Name...
05. Add a new column A with "ren " without the quotes all the way down for all entries...
06. Insert columns needed for spaces in Dos batch file...
07. Save as a text file (SongTitleArtistsName.txt)
08. Check the text file...
09. Each line should read something like this...
(ren BeatlesPennyLane.mp3 PennyLaneBeatles.mp3)...
10. Back up your mp3s (in case something goes wrong)...
11. Rename SongTitleArtistsName.txt to SongTitleArtistsName.bat
11. Run the batch file.

Or

1. Use Dos to create a text file of the directory with the mp3s...
(dir *.mp3 /O:N > ArtistsNameSongTitle.txt)...
2. Send it to Steve (sslechta) & let him create the batch file you need...
(I understand he is pretty good with Excel)

Hope this helps

PS: If Steve can't help...
Contact me & I'll give it a try.

Jim
†=☮&♥