The PLENA matrix system brings the benefits of the latest DSP technology to the fore. All DSP features of the PLENA matrix system can be accessed easily through a user-friendly Windows graphic user interface that searches the network automatically so there is no need to remember IP addresses. The Windows GUI is designed to give installers maximum control over the setup, while the iPad and iPhone GUI is designed for simplicity and ease of use for the end user. Both give end users the ability to select their own background music source and mix any microphone/line input without affecting other zones in the system.