Firefox won't send m3u links to XMMS

[thoughts]

For as long as I've been using Ubuntu, when I click on a link to an m3u file (an MP3 playlist) in Firefox, it would pop up the open/save dialog, where I would select "Open with XMMS." Then XMMS would play the playlist.

Today I installed the last week's worth of Ubuntu auto-updates, and now when I click on m3u links, Firefox plays them internally using the mplayer plugin. Ugh! Terrible.

How can I revert to the old behavior? I don't see any settings in Firefox's preferences that allow me to choose open/save instead of plugin. And I've had the mplayer plugin for a long time now, so it's not like it just got installed so now it's taking over m3u. (Though perhaps it just got updated, and the updated version takes m3u automatically? Even so, I should get to choose!) And I don't want to remove the mplayer plugin; it is useful in some cases.

Here's an example m3u link:

http://magnatune.com/artists/albums/...-sxsw/hifi.m3u

Thanks,

--
Anthony DiSante
Encodable Industries
http://encodable.com/