Hi Ralf,
there are various mouse gesture programs that I think could do that. In addition to StrokeIt that Mouse mentioned Autohotkey (http://www.autohotkey.com ) is capable of mouse gesture scripts ( http://www.autohotkey.com/docs/scripts/MouseGestures.htm ).

Triple left clicks might be complicated to implement since I suppose you would still want to use single and double clicks in many contexts. So the script must often let those through but not in those cases where you want the triple click functionality.

One alternative would be to instead make a mouse middle button gesture. For example, when you hold the mouse middle button and at the same time drag the mouse up, window sends SHIFT-F2. There are two advantages here: Middle mouse clicks are seldom used in window applications so there are fewer possible conflicts. Also, holding middle mouse button and moving the mouse might be less tiring than triple clicking (I at least get tired in my right arm quickly when I do a lot of double clicking so triple would be even worse).

I made such a script for Autohotkey that sends SHIFT-F2 on middle mouse press + mouse move up. You could try it and see if it fits your needs:

lanux128,
"btw, how do you change the output device?"
Not sure what you mean here. This line in the script does it specifically:
RegWrite, REG_SZ, HKEY_CURRENT_USER, Software\Microsoft\Multimedia\Sound Mapper, Playback, %xnew%
After you change that (by just running the script), windows uses the specified device as default.
Maybe you meant recording device? If so, then there's a registry key that I think will work similarly (though I haven't tried it):
[HKEY_CURRENT_USER\Software\Microsoft\Multimedia\Sound Mapper]
"Record"="C-Media USB Headphone Set  "

skrommel, yes sadly the running programs must be restarted to be affected by the change. I've seen some programs that bypass the default device setting and choose output device on the fly but I don't know how to implement that in a script. One idea though: the trial for Virtual Audio Cable ( http://software.muzychenko.net/eng/vac.html#download ) includes the small tool audiorepeater.exe that can virtually sent audio from one device to another. Maybe a script could utilize that.

hi aljhenry,

If I understand what you write correctly you have three different sound devices. If so, then maybe I can help. You can switch between audio devices in Windows XP here:
control panel > sound and audio device properties > audio > default device

Any application running before you change the device (like a browser) must usually be closed and restarted for the change to take effect on its audio. So the process would each time be:
1. change device
2. restart/start the application you want to play the sound from
My stationary home computer has two audio devices that I switch between daily.  I wrote a script in AHK (autohotkey.com) to speed up the switching. Since the script includes the device names on my particular system, it must be modified a bit to work on your system. The script changes the default device by changing a registry key:
HKEY_CURRENT_USER, Software\Microsoft\Multimedia\Sound Mapper, Playback

Here's the core of my script:
If you have 3 audio devices, it could in your case look something like this:
Where you should replace "name-of-device-1" and so on with the name of your audio devices as they are displayed in the sound and audio device properties. Be sure to check if there are spaces at the end of the device names! If there are spaces, add "%A_Space%" (without the quotes) in the AHK script for each space. For example, one of my audio devices is called "C-Media USB Headphone Set  " in the audio device properties and in the registry. Therefore, I have "C-Media USB Headphone Set%A_Space%%A_Space%" in the code above (again, without the quotes).

You then put the script file on the desktop and doubleclick to switch audio device.

Was this of any help?