Multiple IR Sensors with Arduino
technically yes, there is no reason you can't do that project but the issues will come in how complex you wish to make system. For example, it shouldn't be too hard to hook up the three sensors to three analogue Pins on the Arduino and then have the Arduino constantly loop to check the voltage of the sensors, from which, you would tell it to 'do something' when one of the IR sensors voltage is above or below a certain value. What you then choose to do is up to you, if it's just to turn on a light then it can be done fairly quickly once you have all the components. For controlling the Audio in the file, I personally have no experience with this.
What might be better is first checking to see if you can Adjust the audio in one of your files using an Arduino (you may need to use bluetooth or have something on your PC communicate with your Arduino via UART through the USB).
Generally, with new projects, it's a good idea to figure out a solid plan for exactly what you want to do, so I would write down in detail what you want the system to do and then go through each part to see if it's possible