Thanks for all this PegLeg.
Still no sound, and this is the output from those commands in case it reveals anything:
music-server nick # aplay -v -D plughw:1,0 test.wav
Playing WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
Plug PCM: Linear conversion PCM (S32_LE)
Its...