Like I said earlier, Files to Edit > Synchronize Tags should show the files, Synchronize Tags should fix them and Sync should only sync metadata changes for files already on the device that have been fixed in MMW.

Sorted by Album Artist, fixed a few blanks, and then did a sync in MMW to update the files, then synced MMA. That seems to have generally fixed it. I thought it would end up downloading the whole database again, but it seemed to mostly just update some things and only download a few files.

It seems to work but I have to select everything that needs updating so it updates the actual files to match the library. I basically will end up having to pretty much re-download the whole thing...

I believe MediaMonkey auto-fills (but doesn't save) Album Artist when it's unknown. I'm just not sure if this happens in the My Computer node. If true, what MediaMonkey shows isn't in the files and thus not available to other applications. This means you have to tag (Tools > Advanced Tag Management > Synchronize Tags will do) those files so that the Album Artist is saved to the files.

OK. Here are 3 pics. One is from Windows Explorer, one from MMA, and one from MMW.

For screenshots just check the link from Peke, directly above your last posting.

Most of the files are m4a as they came from iTunes back when I had an iPod. Win10 shows Album Artist as a field, it's just blank. So far, it seems as if MMA only gets that info from the music files and not from any MMW database.

I'm not sure how to post a screenshot here as there seems to be no attachment option.

Hi,
It is very possible that Explorer do not read Album Artist tag. What are the file formats (mp3, FLAC, WAV, ...)?

Can you attach Screenshot of MM and explorer, possibly Attach one sample file to Support ticket?

A little confusing. In MMW, it seems to say it has Album Artist. But when I use the regular Windows File explorer properties, it is blank.

Copy some of the problem files (with Unknown Artist in MMA) on your PC (using files on your PC) to a new location (outside of your Library, like Desktop).

View these files using the My Computer node in MMW. Does that show Album Artist?

I had to run Unsynchronized Tags a few times to clear everything up and did the Synchronize Tags. I then did a Sync Now with MMA via WiFi, and it did show a bunch of synchronization, but it still has "Unknown Artist" on most albums.

Go to Music > Files to Edit > Unsynchronized Tags. Select any files listed there and use Tools > Advanced Tag Management > Synchronize Tags in the Main Menu.

If your files were listed there, you will need to Sync again to update MMA too.

This is a bit confusing. In MMW, I turned on the column for Album Artist, and it does show a name for all them. So why is MMA not seeing it even after a WiFi sync? This is before running any changes other than the one album I did a manual test on. Is MMW getting the Album Artist different than MMA?

RegExp can do this: viewtopic.php?f=2&t=28510&hilit=regexp

But again, is there a way to have MMW run a script or something to fill in any blank Album Artist tags with the Artist tag?