Two synths (two channels) may me managed with one instance of Prognum.

The second processing tract (shown in red numbers) features responsibility to the program-changing button on all channels - while sending the resulting MIDI program change message to the chosen (destination) channel only. So user does not have to switch the MIDI keyboard to the second MIDI channel to send a program change to the second synth (e.g. a groovebox).

Visit: Fsynthz