chose the sound output through the card in the Alsa(). —- Do you mean selected the IQAudIO driver in the IQAudIO plugin ??
Sometimes things in the PI get a lille mixed up therefore: check sound card plugin and Raspberry Settings and Squeeze light if you use that!! for your sound card selections. If everything look OK do this:
shout down your pi
unplug only your HDMI cable
start your pi without your HDMI cable pluged in
shut down your pi again
and boot it up again