Hi Jason!
Well, it is quite simple, IanniX does not make any sound 🙂
If you want to generate sound with IanniX, you will have to interface it via OSC with others softwares like PureData, Max MSP, C-Sound or Supercollider.
Let me know which software you usually work with 🙂
If you have Max MSP, we provided you a patch that generate sound (/IanniX/Patches/maxmsp) which works with every exemple included with IanniX.