About synchronization sound when transmition by rtp

hi, gus...I am trouble in following problem.
I hava three datasources which are from microphone at local place, from file at local place, and from network by transimition by rtp getting from microphone at remote terminal. now i want to play them in synchronize. there is a trouble when i merge them that is error: push and pull datasource can not be merged, because that is of pull from file and the others are push. If i play them individually, then it cann't assure that synchronization among them.
so what i will do for assuring synchronization?

By tried 'rotation lock' you mean that the switch on the side of your iPad (above the volume control), or the icon in control centre (depending upon what you've got Settings > General > Use Side Switch To set to), is 'off' ? Have you tried setting that Settings option to 'notification mute' and then toggling the switch on the side of your iPad ?

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