I downloaded a sample 96k flac to test with my Music Streamer II. The DAC's 44.1k LED is lit during playback. I tried with a couple of flac players, including cog. Anyone have an idea why this is?
I found out how to do this. So for posterity, the change needs to be done in the Applications/Utilities/Audio MIDI Setup utility where the max sample rate and the max resolution can be set.