If somenbody want - here is SABnzbd-Suite addon (couchpotato, sickbeard, headphones) for Openelec Matrix (sabnzbd im not test and maybe dont work)
https://www.sendspace.com/file/vyses7
and here unrar 4.2.4 (compatible with couchpotato auto unrar)
https://www.sendspace.com/file/x9w81n