Text:
I consent to Plex to: (i) sell certain personal information (hashed emails, advertising identifiers) to third-parties for advertising and marketing purposes; and (ii) store and/or access certain personal information (advertising identifiers, IP address, content being watched) on my device(s) and share that information with Plex’s advertising partners. This data is used to deliver personalised ads and content, ad and content measurement, audience insights and product development. Your consent applies to all devices on which you have Plex installed. You can withdraw your consent at any time in Account Settings or using this page.
Soure: https://www.plex.tv/vendors/ (Might have to clear cache)
Can also read about the changes here: https://www.plex.tv/about/privacy-legal/
I dropped my library in, Jellyfin indexed it and streamed first try. What didn't work for you?
I dropped my music library into Jellyfin just as an extra. I've built up quite a collection over the years of CDs and always rip and tag them as I acquire new CDs, so while the collection is a little messy it's sizable and mostly correctly tagged
Jellyfin's music playback has been buggy but getting better with updates. At the current rate of improvement it'll probably be really good in a 2-4 years, but right now it's kinda meh. It exists but it's buggy enough that I don't use it much