It took me a while, but I finally found it. I have two audio devices on my laptop. My normal soundcard and my bluetooth headset. I normally have to goto ctrl panel, sound, click the tab, change the setting click ok. Now I use a stroke.
In my global actions, I added two actions.
1st command
Run - Run Program
File: rundll32
Arguments: shell32,Control_RunDLL mmsys.cpl,,2
2nd command
Windows - Activate Window
Caption: Sounds and Audio Devices Properties
Match text: Yes
Wait: Yes
10000 milisecs
3rd command
Keys - Send Keystrokes
S[Alt_Down]A[Alt_UP][Enter]
The S in the send keys is the first letter of the soundcard in the dropdownbox.
I have two actions, one for either soundcard. The second action is exactly the same except the S is a B for the bluetooth item in the dropdownbox.
Hope this helps, I searched the net for hours trying to find a way or a program to do it automagically I should have thought strokeit to begin with.
