To get on the Debian Party Line, you need mumble.
Our mumble server is a mumble 1.2 server. The mumble 1.1 shipped in Debian 5.0 will not work with this server. You need the version in squeeze. This would be a good time to upgrade!
sudo apt-get install mumble
mumble, either from a terminal or from the Internet menu.
Use the Audio Wizard to configure your sound card.
- Go to Server -> Connect
- Click "Add New"
- Configure to use the server
To be able to talk, you'll need a microphone. Of course, if you have a high quality standalone mic, use it! Otherwise, laptop microphones vary in quality, but mumble makes surprisingly good use of them, and has a sophisticated setup process to get the best possible quality.
You're recommended to enable push to talk mode, so that problems with your sound don't feedback or cause noise in the channel.
Go to Configure -> Settings -> Audio Input and select "Push to Talk" under "Transmission".
To configure the key you press to talk, go to Configure -> Settings -> Shortcuts.
Try turning your speakers volume down, or turning down the sensativity of your mic, or moving the mic away from the speakers, if possible. Or, put on some headphones.
You may need to try going through the Audio Setup wizard again, and pick lower values there.
Mumble has a FAQ that may be useful.