fix for clearing meta events too on musictrack->clear
fix for clearing meta events too on musictrack->clear

roecrew/AudioKit,narner/AudioKit,roecrew/AudioKit,laurentVeliscek/AudioKit,laurentVeliscek/AudioKit,narner/AudioKit,roecrew/AudioKit,roecrew/AudioKit,narner/AudioKit,laurentVeliscek/AudioKit,laurentVeliscek/AudioKit,narner/AudioKit