Ok its been a while since I set this up so I'll try remember step by step how I did this...
I'll write an example of how I set up SickBeard. CouchPotato and Headphone's set up is very similar to this.
1. Install Transmission onto your device. There is a tutorial on this forum how to do this. I've set my torrent download folder to my internal harddrive
2. Connect an external harddrive via a usb port or eSATA. Format it and paritition into 2 parts. Mount the 2 partitions. I named one music the other video
3. Download SickBeard python files from
http://sickbeard.com/downloads.html
4. Move the downloaded files to your mounted usb storage on your device
5. Go to setup>software management>advanced options>package management and download python modules (This will install the modules needed to get SickBeard to run) It took me weeks to figure this out!!
6. Now you need to set up SickBeard to run on system statup. To do this you can copy the attached file and put it in you init.d folder located /etc/init.d on your device. Make sure the file is not saved as a .txt file. Save it with no file extension by saving it using "all files"
7. You also need to copy this file into rc3.d and name it S99sickbeard so that it doesnt startup untill your system has run all other proceeses on startup.
8. You then need to copy the file again and save it into rc0.d. Name it K99sickbeard. This is done so that sickbeard is the last thing to shutodwn on system shutdown.
9. Now you can run sickbeard by ssh connection and typing /etc/init.d/sickbeard start
10. To open sickbeard open a browser and type
http://<yourdeviceipaddess>:8081
You done! Tutorials on how to setup Sickbeard can be found on their website.
As mentioned, CouchPotato and Headphone set up is practically the same. Make sure you have a different download folders for tvshows, movies and music so that postprocessing doesnt get mixed up!
hope this helps a bit more
If anybody has any problems or can suggest improvements feel free to comment