Is there any program that allows you to record any stream into Pro Tools thru an "aggregate" IO setup(Soundflower, perhaps)? I record youtube stuff into PT by routing my computer's optical SPDIF into my Presonus Central Station, routing that to the CUE outputs and patching that signal into my PT interface. If you don't have a monitor/source router, you might consider adding one to your setup(this is only 1 of several advantages that kind of unit adds)