CinePaint

So I am trying to edit in 16-bit, and gimp the old boy cannot do it for me so I needed to get cinepaint, but I couldnt find it. Finaly I added the repository "deb http://ppa.launchpad.net/secretlondon/ubuntu hardy main" found on website https://edge.launchpad.net/~secretlondon/+archive and it worked great. Don't know how the program will work out, but it installed!