There is the syncthing-fork that as far as I know is continuing, with the added bonus that it supports a 1-way sync by ignoring deletes on the phone side, so you don’t have to store your whole music collection on your phone if you don’t want to.

The money should be put into a cancer fund to pay for research and people’s medical bills from the cancer all this shit causes.

You just reminded me I have to get caught up with that series again so I can read the last book. I powered through the whole series before the last book was released and now I kind of forget what was going on, to jump in again.