This example demonstrates how to invoke a system level command on Windows or OS and in this particular example, to "say" the word.
In the code, pay attention to:
* Creation of command which differs for the OS ```cmd = "say -v "+voice+" "+words[step]+" "; ``` for OSX and ```string cmd = "data\\SayStatic.exe "+words[step]; ``` for Windows
* Use ```system(cmd.c_str());``` to invoke the command
* Loading of text file and getting contents using ```ofBufferFromFile("lyrics.txt").getText();```
### Expected Behavior
When launching this app you will get a gray screen with:
* The current word being spoken show in black text in the middle of the screen
* The current word changing as it cycles through the entire loaded text
When the key ```r``` is pressed:
* The application will toggle between selecting a random voice from the list of system voices or the default.
Instructions for use:
* Run the application and let it play through the text. Press the ```r``` key to select a random voice.
