A post on the PsB forums will sort you out for streaming to both (assuming you already know how to stream here). Trouble is neither here nor there like to discuss how to set the other up - and rightly so. So it's best to ask the relevant AC site how to setup their method. Its easy to do and lets face it, why stream to one when you can stream to two :)
Each site has pros and cons to their method of streaming. Ucon has potential security issues (anyone can run any command on your server without your consent - read the PBBans Disclaimer for a modicum more information) and the repository method needs user intervention to keep up to date so its arguably slower then the Ucon (or hub) method. However, the only way to streaming to both is using both methods. So you take the pros and cons of each method and live with it. The benefits outweigh the detriments (and risks) in my opinion.
Cheers.
