SparkFun Forums 

Where electronics enthusiasts find answers.

Questions &/or issues related to products in the Audio category should be posted in this forum.
Just wanted to surface this link to the old forum in case anyone is having the same problems that I was.

Getting the Tsunami Arduino library example running on a Due, and kept getting "'Serial1' was not declared in this scope"

To solve this I looked in Tsunami.h and replaced the following line:
#include <HardwareSerial.h>
With this line:
#include <Arduino.h>

Worked for me too. All up and running and making sounds now!