Live-Recording (1998) from the Staatsoper unter den Linden in Berlin with the Berlin Philharmonic Orchestra and Daniel Barenboim. If you like what you see, buy the DVD ;-)!
Franz Liszt: Les Préludes, Berliner Philharmoniker unter Daniel Barenboim.

I tried to keep the video quality as high as possible.
Tip: If your connection or PC is too slow for HD you can switch to HQ-playback with typing "&fmt=18"(without the marks) at the end of the URL. This results in a better sound quality (AAC) and more fun while listening. ;-)
Enjoy! (less info)