aac8040e95
If disk-monitoring is disabled: disk-reader position is not relevant. If Rec-arm is off: disk-writer position is not relevant. But... Play -> [plugins] -> Record is basically a bounce and best done using the bounce operation. (faster than realtime). Input + Play -> Record -> Output Ardour would need to align playback with the Input to be recorded and at the same time align it with output, so that a player can play along on the same track. That's not possible without a time-machine (or a 2nd play processor). While it can work in theory under some special circumstances, allowing the disk-reader before the disk-writer is really just confusing, error prone and valid uses cases are better handled by dedicated operations.
Please see the Ardour web site at http://ardour.org/ for all documentation..
For information on building ardour:
http://ardour.org/development.html