It would make sense that I may not have been able to hear the 48khz audio through the ART, as its max frame rate is 44.1khz. Any thoughts how to fix this?
JACK is definitely set at 44.1 btw...
adam@adam-HP-Mini:~$ speaker-test -Dfront:default -r44100 -c2 -twav
Playback device is front:default
Stream parameters are 44100Hz, S16_LE, 2 channels
Rate set to 44100Hz (requested 44100Hz)
Buffer size range from 90 to 262144
Period size range from 45 to 131072
Using max buffer size 262144
Periods = 4
was set period_size = 65536
was set buffer_size = 262144
Sample rate doesn't match (48000) for /usr/share/sounds/alsa/Front_Left.wav
Will try via external amp later tonight and report back...
Thanks again for all the help so far.