1- Click on Cthulhu to get him started
2- Select the "cd" or "karaoke" under "select mode"
2- Click on a song to the right to start "Karaoke Cthulhu" or play a CD for "Grooving Cthulhu"

Note: "Select Mode" above will only set Cthulhu's sensitivity to sound, not the sound input. See selecting your sound input.
I need more help.