If you download and install the slider package from BlueShoes at
http://download.blueshoes.org/blueshoes ... public.zip and modify your URLs correctly it should work, providing you also copy Damien's "aluminumalloyvolcanic" slider theme.
It is a very nice and neat interface to the browser plugin, and I think the presence of such controls are basically a necessity on any webpage.
However bearing in mind that BlueShoe's license is not compatible with the GNU GPL is this a suitable choice of client library? I know that it is widely accepted that the GPL can't "cross the boundary" of simply scripting a plugin or indeed affect server side code that you may be using the javascript library in
http://www.gnu.org/licenses/gpl-faq.html#WMS, but is it compatible with the ethos of Free Software and thus the VideoLAN Project? Furthermore BlueShoes obfuscate the sources which are only provided free as in beer rather than with the freedom to modify them.
Basically it's pretty trivial but timeconsuming to rewrite it since it's just used for the slider, but that cross-browser stuff is tedious - perhaps using a javascript widget library licensed under the GPL would be a better idea?
