This crashes Firefox 35.0.1 on Windows 8.1 when looking at the tab for Token of Time by Ensiferum. Other songs work fine though (tried two others), there seems to be something wrong with that specific one.
https://www.youtab.me/music/zWSgCcy_Q_8/acdc/rock-or-bust
Looks like it happens right after the YouTube player is loaded.
Thanks.