I can wire up FLS in energyXT so that I can control each channel. For instance, if I have 4 channels with Kick, Snare, Hihat and Tom, sending notes through channels 1 to 4 plays the instrument respectively. The thing is, it won't 'play' the notes. The little MIDI light on the FLS dashboard lights up AND the light next to each individual channel, just as if you were playing the channel directly. But no sound.
If I open the samples and click on them in FLS it plays the sound fine, so it's not a sound config problem.
I'm certain I did this before once without any problem.