>>> Are you suggesting that tempo-controlling plugins should not be possible, or that Cakewalk will (perhaps in the short term, only) invoke the "Hosts may choose not to allow this" clause? <<< The latter. Maybe this whole thing will prove to be much easier once we start getting our hands dirty. Or maybe some of our more live-performance oriented hosts (Project5) will support it but our linear DAW (SONAR) will not. My point is, handing tempo control to a plugin can introduce a lot of complexity in a host app, especially if the host app wasn't designed with this usage case in mind. >>> DOWNstream? Now you've lost me... >>> Pretend we're dealing with MIDI plugins, accepting and receiving MIDI data. One way to vary tempo would be for some plugin to change the musical times of all its incoming MIDI events. But now that I hear myself saying this, it sounds stupid :-/, so never mind. ---------------------------------------------------------------------- Generalized Music Plugin Interface (GMPI) public discussion list Participation in this list is contingent upon your abiding by the following rules: Please stay on topic. You are responsible for your own words. Please respect your fellow subscribers. Please do not redistribute anyone else's words without their permission. Archive: //www.freelists.org/archives/gmpi Email gmpi-request@xxxxxxxxxxxxx w/ subject "unsubscribe" to unsubscribe