client: reverted code not compiling with VS, refs #380

Revert "client: fixed missing external variable, refs #380"
This reverts commit 191b195d7140c821666b9b1349b25b5f8d49db0f.

Revert "client: fixed demo audio synchronization, fixes #380"
This reverts commit 48b0d320d12479cda1b1a04ed334e0b5435fe445.