feat: Change Artist to albumArtist from Plex to LastFM

[zeroquinc]

Please check existing knowledge before opening an issue

• I have checked the documentation
• I have searched through existing issues and discussions.

Describe the new functionality

Currently I tag my music library with MusicBrainz Picard, but Last.FM picks for example "2Pac feat. Dr Dre" as 1 artist.
This could be fixed partially by replacing the artist with the albumArtist field from Plex.

The title still won't fully match, but atleast the Artist would be tagged correctly as "2Pac" on Last.FM.

I also tried to strip the artists after the featuring like this:

[
  {
    "name": "MyPlexApi",
    "enable": true,
    "configureAs": "source",
    "clients": ["Multi-Scrobbler"],
    "data": {
      "token": "",
      "url": "",
      "usersAllow": [""],
      "librariesAllow": ["music"]
    },
    "options": {
      "logPayload": true,
      "logFilterFailure": "debug",
      "playTransform": {
        "preCompare": {
          "artists": [
            {
              "search": "(?i)(.*?)(?<delim>\\s*(?:feat(?:uring)?\\.?|ft\\.?|&|,)\\s*)(.*$)",
              "replace": "$1"
            }
          ]
        }
      }
    }
  }
]

But it doesnt seem to work sadly.

It seems to be already "fixed" on the Spotify side: #81

Do you know if this is possible? Thanks in advance!

Configuration Example

Will you help implement it?

• I am willing to contribute code towards completing this feature
• I am willing to help test preview builds for this feature

[FoxxMD]

I don't have a solution for you with current MS functionality but I do have two big pieces of functionality in the works that will address this, tangentially.

1. Native, improved artist/title parsing

A PR I merged recently introduced some sophisticated artist and title matching that pulls out artists from those kinds of titles/artist ft strings.

It's currently only in use with parsing Listenbrainz Source data, where it originated, but I plan on making this something a user can enable similar to playTransform. I haven't implemented where or how it will be used yet, but it's on the todo list for the near future.

2. Metabrainz for play data cleanup

I just merged a PR that implements persistent data and caching in MS which paves the way for efficient caching/usage of metabrainz as "metadata" provider.

MS will be able to query metabrainz with the play data it receives from a Source, match it with some confidence level, and then "cleanup" artist/albumArtist/album/title data before passing it on to a scrobble client, again similar to playTransform.

---

All of these -- native parsing, playTransform, and metadata providers -- will be able to work in tandem to help cleanup and normalize scrobble data, addressing your artist issue.

I don't have a estimate on when they will be done but it's the next big chunk of functionality I plan to tackle.

[zeroquinc]

@FoxxMD That's great news, really looking forward to it! Thanks for your work.