[Openal] Handling device changes on Vista

[Niklas Frykholm]

What is the recommended way of handling sound device changes (new 
devices being created, old devices being removed) when using OpenAL?

This issue is especially important on Windows Vista where new devices 
can appear when a uses plugs in his headphones. (I.e. a game may start 
with headphones unplugged and find no devices, then when the headphones 
are plugged in a new device appears.)

As far as I can tell, there is no mechanism for detecting "device 
creation" or "device loss" within OpenAL. Should I try to detect these 
events using Windows functionality? Or regularily poll the system by 
enumerating the devices? And then re-initialize the sound system with a 
new device if detected.

// Niklas