Changing album covers: which rights needed for which user?

[knechtberry]

I want to change album covers, found the right one, then see this error:

Code: Select all

java.io.FileNotFoundException: /media/usb0/MUSIK/--BLUES, R&B, SOUL/Weather Report - Mr. Gone (1977)/cover.png (no permission)

Which Subsonic user needs to have which r/w rights?

(Bonus: CLI command)