Automatic update

WMP can check the internet database for new information. If it find new information it will write it in the library and the audio file. Sounds nice, always the most actual information.

If automatic update is on you can let it add missing information or overwrite all media information.

If 'overwrite' is on, it will overwrite all your own edits in all the albums it find on the internet.

Apply media information changes will become very slow with this option on as each album will be checked against the internet database.

If you want to avoid any change to the files you can use the Explorer and set them to read only.