I just discovered that when Reason is the rewire slave to Live, you lose the ability to adjust the master tuning through Reason (Live is in charge of the soundcard). Ableton does not have this feature.
This is a MAJOR problem--I'm having to rethink my entire live setup. a mere three weeks before a string of west coast tour dates. When playing along with and beat-syncing to a DJ and playing live, you've GOT to be able to tune the instruments on the fly to match up with the DJ (and sometimes with the Live samples themselves, you would think).
Has this not been considered?