It's hard to help without knowing how you use fluidsynth. The easiest way to achieve what you ask for, is to issue a MIDI CC 10 = 0 on all midi channels that shall play on the left, and a MIDI CC 10 = 127 on all midi channels that shall play on the right.
Tom _______________________________________________ fluid-dev mailing list fluid-dev@nongnu.org https://lists.nongnu.org/mailman/listinfo/fluid-dev
