This e-build does not work. It does not connect to any of the servers. I eventually had to download the source from their forums and a special linux-patch, also in the forums, before it would connect right.
It works for me, maybe try to set other distfiles mirror in /etc/make.conf.
Which ebuild did you try? Be sure to report versions for things so we know what you're talking about. What command did you use to try to connect to the servers?
couple of things here (1) you need to give us info if you want us to help you (2) i bet you're trying to use `cube_client` instead of `cube_client-bin` ... read the post-einfo messages next time