[ComputerCraft] Soundbox

local monitor = peripheral.wrap('monitor_1')

function clrmonitor()
    monitor.clear()
    monitor.setCursorPos(1,1)
end
clrmonitor()
while true do
    a = 1
    while a > 0 do
        a = redstone.getAnalogInput("back")
        if a == 14 then
            clrmonitor()
            monitor.write("Currently playing:")
            monitor.setCursorPos(3,3)
            monitor.write("Still Alive")
            disk.playAudio("right")
            b = 1
        end
        if a == 13 then
            clrmonitor()
            monitor.write("Currently playing:")
            monitor.setCursorPos(3,3)
            monitor.write("Want You Gone")
            disk.playAudio("left")
            b = 2
        end
        sleep(1.5)
    end
end