Press START when the countdown hits 00 to see the good ending.
Begin a new game and, on 5F of the recording studio, investigate the PC in the middle of the room. Enter the left door and look at the red poster, then the newspaper on the right, and the mixer. Leave the room and use the MUE access on the PC. Go into the left room again and use MUE on the mixer and telephone. Leave the room and go to 1F and ask the girl in the lobby the second option twice and the third option once.
Return to 5F and wait until the conversation ends. Use the MUE access on the PC again. The music will change. After, skip the four dialogue messages from Kine, Usi, Komuro, and your character. There will be a lag of about 5 seconds and a blank dialogue window for the next portions of the conversation - during this time, hold Select for two seconds to change the game to its Sound Test mode. You can hold Up/Down to change the music speed, Left/Right to play some sound effects, and hold Start and then press A, B, A, and B to change the background music track. You can listen to 11 tracks in all. After the final track, press A, B, or Select to continue normal gameplay.