[Openal] Detecting sound cards

[Jeremy Henry]

I need to detect the attributes of the user's sound card or specifically the 
number of channels the sound card has.  Right now I am using a hard coded 32 
channel limit on sounds but we want to be able to detect the limit instead.
Is this supported?  In the programmer's guide it looks like I am supposed to 
use alcGetString to get the device's name but I am not sure how to use it. 
For the first parameter should I pass it an ALC device (or array of them) I 
declare to access the parameters of each device?  Can I pass 
ALC_DEFAULT_DEVICE_SPECIFIER to get my default sound card to get that 
information if this is the correct function?

Thanks,
Jeremy