We use the murmur server on a linode, so it's totally free (if you have a linux server already). Just "apt-get install mumble-server" on ubuntu server. Still h

We use the murmur server on a linode, so it's totally free (if you have a linux server already). Just "apt-get install mumble-server" on ubuntu server. Still have to use skype for external calls and stuff, but for internal comms we love it so far.