[primaeval]

is it possible to show free disk space. i have Pi3 with sd-card and share my record folder at the same one. 

 Try 0.0.103.
I've added in an item at the bottom of the index page to show the free space in MB at the bottom if possible.
I have only tested it on Windows but it should work on the pi.
It probably won't work for networked drives. It doesn't for an smb share on Windows for me.

If you have a networked server on your home network with a writeable shared directory you should be able to write to that instead of the sdcard.

There is also the Kodi Storage Information screen at
Kodi \ Settings \ System Information \ Storage