You're still better off with something from 8Bit-do at that price. If they included trackpads and vibration it would've been a nice Steam Controller v2.
If you're on Desktop just use VLC, or try running Nova in an Android VM.
Most Linux users are the type to meticulously organize their files, so I wouldn't expect that there's an app that'll do what you're looking for. There are plenty that will help you rename/restructure your WebDAV though.
As much as I don't care to use Ubuntu anymore, I will always be grateful for giving 15-year-old me a comfortable and easy transition into Linux. Hard to believe that was 20 years ago, I think I still have one of the CD-ROMs they used to mail out somewhere.
My god that might just work, I've used RS Toolkit a bunch and forgot it had that feature!