1. Close TntMPD.
2. Delete "TntMPD.app" from the "Applications" folder.
3. Empty your Trash in Finder. If you can't, you may have to restart your Mac.
3. Delete the folder:
"Users / (your name) / Library / Application Support / TntWare / TntMPD"
(To get to the Library folder on Mac OS X Lion - 10.7:
Hold down the Option key, and click the "Go" menu in Finder. Then click on the "Library" menu.)
4. Reinstall TntMPD from this download:
http://www.tntware.com/tntmpd/downloads/p/14018.aspx
5. Launch TntMPD.
If you already had an existing database file:
Click "No" when prompted to create a new database.
Under the "File" menu, click on "Open" to open your existing database file.