Yes, you can use BeoPort without any audio master, I've been doing that for 4 years.
If you have no other B&O master (= video master, for instance), you simply set the BeoPort to option 2, plug the infra-red eye in the box & use your Beo4 for NMUSIC, NRADIO and CD.
You can link the BeoPort to another room, I've had a BeoLab 2000 working like that for almost a year.
The only limitation, when having no audio master, is that if you add a video master (BeoVision) and integrate all with Masterlink, you could control the video sources from your PC/Beo4 via IR eye , but no longer control the BeoPort from your TV, as option 6 on BeoPort with no audio master makes the TV "blind".
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