Version: 7.0.1-4
Severity: wishlist

Dear Maintainer,

It seems iceweasel does not understand the magnet links protocol. Could we have
iceweasel associating magnet links to torrent software by default?

Thanks for your consideration

as a workaround

open a new tab, type about:config

Right-click -> New -> Boolean -> Name:
network.protocol-handler.expose.magnet -> Value -> false

Next time you use the magnet protocol, it will give you the familiar
"associate application" box. Navigate to your magnet-compatible client,
(probably /usr/bin/azureus or /usr/bin/vuze but I don't know for sure, as I
don't use that program) and there you go.

from
http://www.linuxquestions.org/questions/linux-newbie-8/how-to-add-magnet-support-to-firefox-460090/#post3771961