Amarok is able to play music from an Ampache media server. If you want to install a server, see here for more information. Installation directions are here.
Activate the Ampache service using Settings -> Configure Amarok... -> Internet Services before Amarok 2.4.1, 2.4.1 on: Settings -> Configure Amarok... -> Plugins.
Select Add Server:
Configure the service with the data entered on the server:
Now the Ampache service should appear in Media Sources -> Internet.