Plex Music Tagging Problems

Server Version#: 1.14.0.5470
Player Version#: 3.77.2

I have recently rebuilt my Plex Music Library (split it into two to separate my partners music from my own) and have issues with some of my albums. Most of my albums are OK but a significant number are appearing incorrectly in Plex.

As an example, Queen’s Greatest Hits I, II & III (Platinum Collection) is appearing as “Unknown Artist” and “Unknown Album”. Not only that, but Plex has merged the album with Groove Armada’s “Best Of” album and Lunar Glyph’s “Desolate”.

Queen’s Platinum Collection is tagged like so (using dbPowerAmp):

The files are located in a folder like so:

In Plex, it appears like so (you can see the Groove Armada tracks at the bottom):

Altogether there are 91 tracks in this “album”. There are 38 such “albums” which all exhibit the same issue of “Unknown Artist” and “Unknown Album”.

I have told Plex to use embedded tags:

And have given priority to the Local Media Assets for Aritsts and Albums:

I have tried using Kid3 to edit the tags too, to rule out a problem with the tag editor. I did the “Plex Dance” too after each time I made a change.

I could manually edit everything in Plex but am concerned I will just have to do it all over again later. I am using Plex Server on MacOs Mojave and the Plex Web Client.

Please can someone advise how I can get Plex to recognise the tags properly?

Try converting those aiff files to Flac and retry.

That did it. Hmmmm I need to have AIFF files due to compatibility with other things I have going on.

Is there a way to get Plex to recognise the metadata in an AIFF file? File naming convention possibly?

This would be the only way. But you have to stick to the convention by-the-letter.
Try this:

Music/Q/Queen/Queen - Greatest Hits I, II & III (2011)/
   01. Queen - Bohemian Rhapsody.aiff
   02. Queen - Another One Bites The Dust.aiff
   03. Queen - Killer Queen.aiff
   ...

So the name of the album folder must always include the albumartist name, then a space dash space and the album title.
(Yes, despite of the parent folder bearing the artist’s name already.)
And the files always
tracknumber. trackartist - tracktitle

Important: After renaming the files and folders, perform the Plex Dance (you can leave out step 4 with music)

If you have an album with multiple discs, you can use one subfolder per disc, named Disc n.

Thanks for your help so far, OttoKerner. I have followed your instructions above and have had some success.

My file naming convention for the AIFF files now looks like this:

After doing the Plex Dance, the album now appears twice in the Plex UI:

The first entry is correctly named (I used “The Platinum Collection” as it was shorter) but only contains 1 track, number 48 “Another One Bites The…Queen with Wyclef Jean”.

The second album entry has the correct artist but the album still appears as “[Unknown Album]”.

Here are two shots of the track which has been correctly identified:

And here are the remaining tracks, which are all marked with “[Unknown Album]”.

There is no difference in naming convention between Track 48 and the other 52 as far as I can tell.

And did you perform the Plex Dance, after you renamed the files and folder?

Yes I did.

I wonder if the second dash in the file name of track 48 does mess things up.
Take a look at all your file names and make sure they all contain just one dash, the one between artist name and track title.

Then repeat the plex dance.

I’m getting close! All tracks are now in one album, but the album name is still showing as “[Uknown Album]”.

Folder structure looks like this:

afp://192.168.0.51/music/Music/Q/Queen/Queen - The Platinum Collection

Can you spot anything wrong with this?

I think the only potential disturbance now can come from your ‘index letter’ subfolder.
If we assume that your library is looking at afp://192.168.0.51/music/Music (does it?),
then the subfolder /Q is the only thing left that could influence things.

You could perform an experiment and try
afp://192.168.0.51/music/Music/Queen - The Platinum Collection

Thats correct, the root music folder that Plex looks at is afp://192.168.0.51/music/Music.

I tried moving the Queen folder up one level so that it is now: afp://192.168.0.51/music/Music/Queen/Queen - The Platinum Collection

After another Plex Dance, the result is the same, the album name is “[Uknown Album]” while the artist name is correctly identified as “Queen”

Incidentally, I use the index letter names because I found MacOS was very slow at loading a folder with too many items in it.

That is unfortunate. But I don’t have any other idea left. Sorry!

Yes, this is a good way to reduce the number of items in a folder.
And it is not only an issue in MacOS.

Ok, thank you so much for your help!

Do you happen to know why Plex can’t read metadata for AIFF files?

I don’t know why. Probably because it is rarely used. Each feature needs to get developed and tested. Rarley requested features tend to get omitted.

The more I dig into this, the weirder it becomes. Today I added a new album to my collection, also with AIFF files, like so (I wasn’t trying to get Plex to recognise this, hence why the naming convention isn’t correct):

Also note that these live in a slightly different path, because it is a compilation rather than an album: afp://nas._afpovertcp._tcp.local/music/Music/Compilations/L/Late

However, in this case Plex IS reading the metadata! Note the album name on the folder is separated with a hyphen. Then look at how Plex shows it:

See how the name is separated with a semi-colon? Thats how it is in the metadata!

So I don’t think it is true to say that Plex can’t read AIFF metadata. It can . . . under certain conditions. I’m still trying to nail down what those conditions are…

Are you perfectly sure that your library only uses the Personal Media agent? Because otherwise, these metadata could also have come from last.fm or Gracenote.

Yes, I just double checked. I don’t want to flood the forum with screenshots, but here are two:

I can’t turn off Last.fm or Plex Premium Music as the options are greyed out. I have unchecked all of the checkboxes within the configuration, however.

These are not very important.
What is set in the properties of the music library, at the ‘Advanced’ tab for ‘Agent’?

Do you mean this:

I can confirm the same issue, but with .mp3 files. Lately, I have added music to my library and album art is not tagging properly as well even as “Local Media Assets” for Albums and Artists are on top of the list and then Plex Premium Music is next as if you put Plex Premium Music first, Gracenote metadata takes priority. Maybe there is a bug related to adding Tidal to Plex in some way?