It would sometimes be useful IMO to have RMX *not* sync to sequencer tempo. Is this possible? I don't think it is.
Sometimes I just want to hear the Loops at their original tempo (for instance) without having to change the sequencer tempo.
And sometimes I'm just working with Audio tracks (compiled or cut independently of the song tempo) and need a "quick fix" groove to play at an audio file's own (known) original bpm, which is however different to the song tempo.
An internal Tempo Sync in RMX would be useful (though of course mildly less than idiot-proof) IMO.