Flexget will work for both deluge and rtorrent. Just will have to configure it to download the .torrent to the watch directory. But it has no gui frontend like rutorrent. rutorrent already has a rss reader. https://code.google.com/p/rutorrent/wiki/PluginRSS
After setting it up, you will need to add the bitmetv cookie in the cookie plugin. https://code.google.com/p/rutorrent/wiki/PluginCookies
To get the cookie in firefox, you can right click on bitmetv page -> view page info -> security -> View cookies.
After getting the cookie values, need to put that in cookie plugin of rutorrent
bitmetv.org|uid=value;pass=value;<there's a third cookie for bitmetv>

It should be able to download the .torrent files now.
For deluge, there is a rss plugin but it doesn't work all the time. I prefer flexget. It can be used with rtorrent too but needs root access to install it. But its more flexible, better filters, more options, you can also tell it to download torrents between a certain size (in mb) which can't be done in the rss plugin.