here is the work-around.
1. create as much VST - Sampler instances in your DAW as you need.
(If you need 32 midi Channels create 2 VST Linux instances in your Sequencer program.)
2. Click on one Instance - the Fantasia Frontend will load.
If you see only one Input Output Port but you allready have made two instances do the following:
Go to menue ACTIONS- REFRESH or press the Key "F5".
If you want to create a new Instrument channel the Fantasia Sampler frontend creates by default a channel which is allocated to the first MIDI Port and the first audio port. If the channel is already created, you cannot re allocate it to an other port.
The thing is to tell the Fantasia Frontend not to do something by default.
So here is it:
Go to menue Edit - preferences - defaults
therein deselect the hook at "use default actions when channel is created".
Afterwards you have to select the sampler engine, the MIDI Port and the Audio Port by your own.
Best Regards, Markus