[kmengvik]

There won't be anything in the Addons tab until you add some addons.

In the next tab Browse find an addon folder with live tv channels then press Add Folder.
That will add all the streams in the folder to a file called addons.ini in your addon_data folder.
The next time you open Stream Setup the channels should be in the Addons tab.
If the streams match your xmltv channels you should get a chance to choose one when you play a channel.

Thank you for ultimate fast response. However, this way also fail, as I seem to be unable to browse folders. At the bottom of the "browse" tab I find the button "add folder". By clicking here I get a dialog proposing the following two options: "default" and "alternative streaming method". Then nothing again..