docs(blog): introduce unified Themerr (#489)

Author: ReenigneArcher

_posts/2026-10-08-introducing-the-new-themerr.md

@@ -0,0 +1,40 @@
+---
+layout: post
+title: Introducing the new Themerr
+subtitle: One theme song manager for Plex and Jellyfin
+cover-img: https://app.lizardbyte.dev/dashboard/github/openGraphImages/Themerr_624x312.png
+thumbnail-img: https://app.lizardbyte.dev/dashboard/github/openGraphImages/Themerr_624x312.png
+share-img: https://app.lizardbyte.dev/dashboard/github/openGraphImages/Themerr_624x312.png
+gh-repo: LizardByte/Themerr
+gh-badge: [follow, star]
+readtime: true
+tags: [announcements, Themerr, Plex, Jellyfin]
+comments: true
+authors:
+  - github: ReenigneArcher
+---
+
+LizardByte now maintains one unified [Themerr](https://github.com/LizardByte/Themerr)! We recently revived
+Themerr-plex as a standalone application, then added Jellyfin support and renamed it Themerr. With both platforms
+supported in one application, [Themerr-jellyfin](https://github.com/LizardByte/Themerr-jellyfin) has been archived.
+
+## What is Themerr?
+
+Themerr adds theme songs to your movies, collections, and TV shows in Plex and Jellyfin servers using
+[ThemerrDB](https://app.lizardbyte.dev/ThemerrDB/), a community-maintained database of theme songs.
+
+## What's new?
+
+The unified application provides several benefits over the previous plugin versions:
+
+- Manage multiple Plex and Jellyfin servers from one instance, with server discovery and OAuth login for Plex.
+  Choose which libraries to process on each server.
+- Add themes to collections on both platforms, including new collection support for Jellyfin.
+- Match Jellyfin TV shows using TheTVDB metadata as well as TMDB.
+- Get a clearer view of theme coverage in your libraries and better error reporting, with searchable logs.
+- Contribute themes to ThemerrDB more easily.
+- Preview theme songs directly in Themerr.
+
+Migrate to the new Themerr today! Visit the [documentation](https://docs.lizardbyte.dev/projects/themerr/latest/)
+for installation and setup instructions, or [browse the releases](https://github.com/LizardByte/Themerr/releases)
+to download the application.