thanks for the answer, i have been looking for it for a long time

@CherryStraw ok. i forgot that's how you change it.

@StrawberryAR
You need to add the folders to the collection in Settings / Collection. And make sure "Monitor the collection for changes" is checked.

@ida
Transparency isn't supported for custom background images.

@HanifMZ
I had to remove it since Genius changed their web pages, many times it was showing only partially lyrics, and Genius keeps changing their web pages, continuously breaking the lyrics parsing. It's also pretty messy to parse HTML instead of using an API.
It's not possible to get full lyrics from the Genius API, and their search is also very bad, so I finally just decided to just remove it.

@jonas
thank you, I have been able to set Strawberry as the default app to open the link and it is now working.
Many thanks

I'm not sure if that happens with a particular album or all of them. And the text of the error may help someone to figure out what's happening. What is it?

Just a couple of tips adding to the suggestion by silver-sun (which is the safest for important playlists, since an external file will survive an eventual database corruption):

Use Undo to fix a mistake during the current Strawberry session. Keep in mind that the undo history will be lost if you close the player.

We have starred (favorite) playlists, which are kept in the sidebar tab "Playlists" after being closed in the playlists pane (so, there's less chance of spoiling them), and are updated on the fly when open, like regular ones. To add a favorite, right click on the playlist tab and choose "Star playlist"

You may find the combination of external, regular and favorite playlists that suits you best. For example, an external as backup to save every now and then plus a favorite (even also a regular one). Or two favorites: a do-not-touch version for reference/backup and another one to play with safely.

@Darkness-Twisty
It works here with the latest release 1.2.11, if you got an option for "OAuth", it's an older release of Strawberry, the latest OAuth is always being used.
Strange errors might happen if there is a incompatible client id used.

I figured out how to fix this.
I inststalled DB Browser and it allowed me to edit the database and remove the items that no longer existed.

I know this topic is quite old but I'm having the same issue today but the "offline mode" setting is unchecked/disable and yet it still doesn't scrobble, what do I do when that is the case?

(I'm running Strawberry on NixOS however, no flatpak)