Computer Craft: Music Player

print("Enter the side the disk drive is on")
local side = read()
if disk.isPresent(side) == false then -- detects if there is a disk
 print("No Disk")
end
if (disk.isPresent(side) == true) and (disk.hasAudio(side) == true) then -- if there is a disk and it has audio it will play
 local diskname = disk.getAudioTitle(side)
 print("Now Playing: " , diskname)
 disk.playAudio(side)
end
 if (disk.isPresent(side) == true) and (disk.hasAudio(side) == false) then -- if there is a disk and it dosent have audio aka a floppy disk, then it will eject it
 print("Invalid Disk")
 disk.eject(side)
end