I have two arduino's. One i have the wave sheild connected to it, , and the other i need it to control the ssc-32,, and i also need both boards to communicate to each other, I think this will use all the serial interfaces, How can i connect the ssc-32, the wave sheild, and let both boards communicate with each other. Thanks

how about getting your 2 boards to talk via i2C? That's what I did when I needed to use 2 serial ports and needed more speed than a SoftwareSerial provides.