wget http://www.mumblyworld.info/ubuntu/depot.key -O- | sudo apt-key add -
--14:53:54--  http://www.mumblyworld.info/ubuntu/depot.key
           => `-'
Resolving www.mumblyworld.info... 88.191.24.9
Connecting to www.mumblyworld.info|88.191.24.9|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1,710 (1.7K) [application/pgp-keys]

100%[====================================>] 1,710         --.--K/s             

14:53:54 (158.84 MB/s) - `-' saved [1710/1710]

OK