title: Toggling a system sound - swift
body: <p>I want to make it so that a button can be clicked, which will start <strong>repeatedly</strong> playing a system sound over and over (without overlapping the sounds) until the button is clicked again - so essentially, the button will toggle the repeated playing of an audio services system sound on/off.</p>
  
  <p>If anyone would know how to do this I would greatly appreciate it.</p>
  
  <p>Thanks</p>