mailcap - trouble editing .mailcap file

[Thomas Ibbotson]

I've been trying to get lynx to always open torrent files using 
btdownloadcurses. I've been having a problem that when a graphical 
display is available (i.e. my desktop) it opens transmission. Now I 
managed to find that this was happening due to settings in my 
/etc/mailcap file, and that to override that file I needed to add a line 
in my .mailcap file. So I added this line:

application/x-bittorrent; /usr/bin/btdownloadcurses --responsefile '%s'; 
needsterminal

However, when I follow a download link for a torrent in lynx it still 
opens transmission. Have I missed something?

Tom