More info on this - I've found that the control marked as being for the
microphone actually controls the CD volume (and its left and right are also
swapped). I haven't plugged in a mic to see what controls it, as I don't
know what software to use to drive it.

> 1) The CD mixer control has no effect on the CD volume
>
> 2) Left and Right are swapped for the PCM mixer - turning
> down the "R" reduces volume of the left ear in my
> headphones, and vice versa.
>
> I also tried xmix, and it gave similar results.
>
> So, 1) any ideas why the CD mixer control doesn't work?,
> and 2) is there a switch somewhere to swap left and right?
>
> Here's the dmesg output for stuff related to the card
> (could I get better results by disabling wss and using some
> other driver?). I'm running -current as of a couple days
> ago:
>
> wss1 at isapnp0 port 0x534/4,0x388/4,0x220/16 irq 5 drq 1,0
> wss1: Crystal Codec WSS/SB: CS4236B compatible audio0 at
> wss1: full duplex, mmap opl0 at wss1: model OPL3 midi1 at
> opl0: WSS Yamaha OPL3 joy0 at isapnp0 port 0x200/8 joy0:
> Crystal Codec GAME joy0: joystick not connected isapnp0:
> <Crystal Codec, CSC0010, , CTRL> port 0x120/8 not
> configured isapnp0: <Crystal Codec, CSC0003, , MPU> port
> 0x330/2 irq 9 not configured