>In the interest of correct documentation how is this explained:
>
>hw:0,0
>
>The first zero is the card number?
>The second zero is the device number?

the first index is the card number, the second is the device and the
third (rarely used) is the subdevice.

>What happens for sound devices that are not cards? For example the usb 
>quattro.

its still a "card" in the sense that its a specific driver controlling
a specific piece of hardware. perhaps "device" is a better term. it
corresponds to the index shown in /proc/asound/cards.

--p


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