I just installed the Plex media server from the Ubuntu Software Center, and opened the web interface. I wanted to start by adding a collection. When it gave me a file browser, I wanted to go to /home/robin/Videos. /home is as far as I got. It showed robin, with an arrow in front of it, but when I tried to expand the directory tree it was empty. The same happened when trying to access /media/Data.
For me it's quite useless like this, as all of my media files are inside those 2 directories.

Help would be much appreciated.

My first guess seemed to be a correct one; It is, as always, a permissions problem.
How do I give plex access to my home folder without also giving other users access to it? My home folder is encrypted by the way, so that'll probably complicate things a little.

robin@RobinJ:~$ sudo -u plex bash

[sudo] password for robin: 

bash: /home/robin/.bashrc: Permission denied

plex@RobinJ:~$ ls -al

ls: cannot open directory .: Permission denied

plex@RobinJ:~$ cd /home

plex@RobinJ:/home$ cd robin

bash: cd: robin: Permission denied

plex@RobinJ:/home$ ls -al robin

ls: cannot open directory robin: Permission denied