Override Files on download 1) shouldn't download the same file again 2) Delete old files

[avimar]

https://github.com/clementine-player/Android-Remote/blob/f0ffd3ed28c948f68ffa41c4ebcfa8c1deb09037/app/src/main/java/de/qspool/clementineremote/backend/downloader/ClementineSongDownloader.java#L346

Hi - I'm downloading my playlist and I enabled "override" hoping that it would sync my playlist, both adding new files and removing ones I've deleted.

I'm using Clementine on desktop and then I want offline access.

1. But it seems if the file already exists it downloads it again, which can take quite a bit of time. It seems there's no check on this line for file equivalency. If the file already exactly matches (filename + size? Maybe we get a hash of some kind? It doesn't need to be a slow crypto hash, a "decent" hash like crc32 or xxHash is probably good enough)

2. Is these a way to remove downloads of anything I've removed from the playlist?

Thanks!