>Another noob audio effect question: >What tools (software) and techniques are used to >accomplish the effect of a source of sound appearing >to move >gradually from one speaker to another? >I'm not talking about mere channel swapping, but >rather something like the final auditory illusion >suggesting gradual movement, e.g. a horse galloping >by, or a train with its whistle being 'dopplerized'. A simple pan should suffice. If you want the doppler effect an automated pitch change should do the trick. (any simple editor with panning and plug-in support) If you want to model the environment, the TAP reverb editor would probably be best for that. None of this is hardware dependant. Your soundcard should work just fine. -Reuben