Go into the installer, and then click on Sources, and then refresh. You should get a prompt to install a new verison of installer. If not, then click on Installs and scroll down to Sources, and install Community Sources. If it fails, click install again and then click clear the queue. Then click install. It should work.
Any time you try to install something and it fails, it still remains in the queue as the next thing to install, so if you don't clear it out, everytime you attempt to install anything, it's going to fail because that first package is still in there.
iBrickr was great back when it came out, but things have progressed way beyond that now.
Search for the following, and you should figure out what programs will serve you best.
"How to make ringtones in iTunes"