UPDATE: Belgrade 2011 LIVE feed is here on belgrade2011.rs, completely free and working! The links below might not work, though.
Poltiming LTD announces today that they will be transmitting live from the European Junior Swimming and Diving Championships in Belgrade this summer, on www.poltiming-live.pl and www.facebook.com/streamit.live. They were also in charge of the live transmission from Helsinki 2010, so I guess they know what they are doing. Diving will be from June 29th until July 3rd, and swimming from July 6th until July 10th.