Update sound.md (#2974)
Update sound.md (#2974)


weddingdj/aframe,mkungla/aframe,RSpace/aframe,ngokevin/aframe,mkungla/aframe,aframevr/aframe,weddingdj/aframe,wizgrav/aframe,googlecreativelab/aframe,dmarcos/aframe,googlecreativelab/aframe,ngokevin/aframe,dmarcos/aframe,aframevr/aframe,RSpace/aframe,chenzlabs/aframe,chenzlabs/aframe,wizgrav/aframe