What works
Chatting, dialing in (requires simple bash script).

What does not
Nothing

What was not tested
Calling in

Additional Comments

First, download the client.  Then, run

wine ~/Desktop/TalkShoeSetup_windows.exe

Install, then run this:

cd ~/.wine/drive_c/Program\ Files/TalkShoe/
mkdir ~/.talkshoe
cp -r * ~/.talkshoe
cd ~/.talkshoe

Create a bash script like this:

#!/bin/bash

dir=$HOME/.talkshoe
cd $dir

for d in $(ls "${dir}/lib")
do
cpath="${cpath}${dir}/lib/${d}:"
done

java -Dtalkshoe.appdir=$dir/ -classpath ${cpath}console.jar com.pcs.client.AutoUpdateClient $1

Save it as talkshoe.sh in your home folder. Now, go back to the terminal and type this in:

mv ~/talkshoe.sh ~/.talkshoe/
chmod +x ~/.talkshoe/talkshoe.sh

Now go to Firefox, and type in "about:config" in the address bar. Right click somewhere, and go to "New > Boolean". Enter "network.protocol-handler.external.tksh", click OK, then double click on true
Right click again, go to "New > String". Type in "network.protocol-handler.app.tksh" and click OK, then type in "/home/username/.talkshoe/talkshoe.sh" and click OK (change "username" to your username).

There you go! Restart Firefox, and you should be able to run TalkShoe. Please leave comments if this worked/didn't work for you, so I can make modifications if necessary.

The only issue with this is, due to how Java opens the sound device, you can't have any applications running that create sound when you start TalkShoe, and once it is started, other applications will not be able to play sound. If you want to remedy this, you can install aoss (in Ubuntu, install the package alsa-oss) and modify the file "~/.talkshoe/talkshoe.sh" so that the line that begins with "java" reads like this: "aoss java -Dtalkshoe..."