The pin mapping is not defined for the Sanguino in WaveHC.
ArduinoPins.h checks for a Sanguino but only generates an error since the pins are not defined.
You could define a pin map and try the Wave Shield on the Sanguino. The SPI pins for the Sanguino are :
# Digital 4 - SS (used for SPI)
# Digital 5 - MOSI (used for SPI)
# Digital 6 - MISO (used for SPI)
# DIgital 7 - SCK (used for SPI)
You need to define three or four pins for the DAC. You only need three if you ground LAT.