No Add Device Button

My apologies if this has been answers already, but I'm new to servo..

I've got an iMac, how installed Serviio... Wanting to connect iMac via a belkin router to a Kaiser Bass media player... Following the instructions, however there is no 'add' device button on the Status page.

Any ideas?

[zip]

It's been removed a long time ago. Where did you read about it?