Streams aren't really controlled by the Standard Shield, but come through the Web Shield. Now there are some streams that have non-standard use of the HTTP ports to stream and the web shield is expecting standard HTTP Protocol through port 80.
Try this for one of the problematic streams, if that works add the others one at a time.
Open the Web Shield provider, Customize, Basic tab, Ignored addresses: add the IP address (not domain name), e.g. 123.123.1213.123, to the input window, separate multiple IP addresses with commas.