Hi,
I can't reproduce the problem in my setup. Do you get the same issue if you run `aplay -D default:CARD=ADAU1761 /usr/share/sounds/alsa/Front_Left.wav`?
Are you using the raw device or are you using the rate and format conversion plugin?
Can you run aplay with --dump-hw-params for the setup were it is not working and send me the output? And the same for `aplay --dump-hw-params -D hw:1,0 /dev/zero`.
- Lars