Stopped the shopkeeper from singing his normal songs in zone 2.

Added 3 tracks to replace the zone 2 ones.

Bit of a bigger update.
Added the modified PSY Dorian sprite.
Added all relevant modified PSY Dorian voice sounds. (hurt, attacking, and death)
Added 2 songs to replace the fight with necrodancer to go with the sprite change.

Added a "special" audio suprise that has a chance to play whenever Goatdog is dead.

Published.