Milovana.com

No experience about the lovesense and/or linux part.

But give xtoys.app website a try.
Should work on linux too (at least the sound file loading/funscript part, not sure about system sound)

If website works on linux itself, i would think chances are good toys would too.
But no linux experience there.

You can use IntifaceCentral to connect your device and there are tons of services supported, I believe also a scrypt player.

Also take a look at my project - TLS - if you want (it's free, link in signature).
It's a video player that connects to IntifaceCentral and it has support for Linux.
It does not play funscrypts though, the concept is different but - at least for me - fun nonetheless :D