I tried a couple of Linux Images to see if they support the Cirrus Logic audio card.

• Volumio 1.5 - does not support the audio card.

# cat /dev/sndstat
Sound Driver:3.8.1a-980706 (ALSA emulation code)
Kernel: Linux volumio 3.12.26+ #702 PREEMPT Wed Aug 6 17:43:49 BST 2014 armv6l
Config options: 0

Installed drivers: 
Type 10: ALSA emulation

Card config: 
bcm2835 ALSA

Audio devices: NOT ENABLED IN CONFIG

Synth devices: NOT ENABLED IN CONFIG

Midi devices: NOT ENABLED IN CONFIG

Timers:
7: system timer

Mixers: NOT ENABLED IN CONFIG

• SqueezePlug_rpi_750 - does not support the audio card

# cat /dev/sndstat 
Sound Driver:3.8.1a-980706 (ALSA emulation code)
Kernel: Linux lounge-audio 3.12.28+ #709 PREEMPT Mon Sep 8 15:28:00 BST 2014 armv6l
Config options: 0

Installed drivers: 
Type 10: ALSA emulation

Card config: 
bcm2835 ALSA

Audio devices: NOT ENABLED IN CONFIG

Synth devices: NOT ENABLED IN CONFIG

Midi devices: NOT ENABLED IN CONFIG

Timers:
7: system timer

Mixers: NOT ENABLED IN CONFIG

• cirrus_audio.img - Obviously this does support the audio card.

# cat /dev/sndstat 
Sound Driver:3.8.1a-980706 (ALSA emulation code)
Kernel: Linux raspberrypi 3.12.33+ #12 PREEMPT Wed Dec 3 09:36:24 GMT 2014 armv6l
Config options: 0

Installed drivers: 
Type 10: ALSA emulation

Card config: 
bcm2835 ALSA
snd_rpi_wsp

Audio devices: NOT ENABLED IN CONFIG

Synth devices: NOT ENABLED IN CONFIG

Midi devices: NOT ENABLED IN CONFIG

Timers:
7: system timer

Mixers: NOT ENABLED IN CONFIG

Using Squeezelite, I can set up a simple squeezebox player

Squeezelite v1.7, Copyright 2012-2015 Adrian Smith. See -t for license terms

pi@raspberrypi ~ $ cat /etc/rc.local 
#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.

# Print the IP address
_IP=$(hostname -I) || true
if [ "$_IP" ]; then
  printf "My IP address is %s\n" "$_IP"
fi

/home/pi/Reset_paths.sh
/home/pi/Playback_to_Lineout.sh
/home/pi/squeezelite-armv6hf  -o sysdefault:CARD=sndrpiwsp -n Lounge -z
exit 0