I am trying to set up Roksbox to stream videos to my Roku. I am new to Linux and don't know a lick about adding directories as defined on the following. Any help would be beneficial.

https://wiki.amahi.org/index.php/Roksbox_for_Roku

Every time I go into the apps section of my dashboard to try and install and app, there is no install button. When I first started using Amahi I downloaded Disk Stats, but then I had my system go down so I had to reinstall Amahi and ever since then there is no button to install apps. Please help. I ...