Android:
ILiveSDK.getInstance().getAVContext().getAudioCtrl().pauseAudio();
ILiveSDK.getInstance().getAVContext().getAudioCtrl().resumeAudio();
iOS:
[[[ILiveSDK getInstance] getAVContext].audioCtrl pauseAudio];
[[[ILiveSDK getInstance] getAVContext].audioCtrl resumeAudio];