Log into your NAS as administrator and go to Main Menu → Package Center → Settings and set Trust Level to Any publisher.
Then, go to Beta tab, and tick "Yes,beta versions!".
In the Package Sources tab, click Add, type Zappiti as Name and http://using.zappiti.com/synology/ as Location, then press OK to validate.
For Beta, use : http://using.zappiti.com/synology/beta as Location.
For an optimal configuration, we strongly advise you to configure your firewall.
Control Panel -> Security -> Firewall
We'll create 2 rules (Source Port/Destination Port) on the LAN network.
Go back to the Package Center and enjoy Zappiti's packages in the Community tab.
First, select MONO in the list, then Install.
And now you can select Zappiti Server, then Install.
Step 5 : Select Zappiti Server for Synology and enjoy Zappiti !
The name of your Server will be the same as your NAS. For example ZAPPITI-NAS, or DISKSTATION...