First of all i should say, "Tixati is a GREAT software", there is no argument.
But it will be more great if developer(s) could add a feature to download a torrent using just info hash

magnet:?xt=urn:btih:INFO_HASH_HERE

adding a magnet link with above will do the trick

ex magnet:?xt=urn:btih:11111111111111111111111111111111111111

Thanks!

-supun

Feature is there:

Select "+ Add" button at top left of screen

This opens "Add New Transfer" Dialog box
Select second option "Open Magnet-Link"

Then paste the Hash into dialog box. If the Hash is valid the greyed out "Open" button at the bottom of the screen will ungrey and click on it to start the transfer.

it's already there.. i just didn't knew. sorry. my bad.