Nitelife: you can edit the 2. voice if you like it, and store into new program or store into defaul slot (but overwrite original without recover)

about sample piano: korg ? depend what you like, I have korg pa2x too and I have sampled the ketron sd1 piano because I don't like korg piano. but korg has very fantastic sampler

in audya you can forgo to sampler a good piano, you can have what you want all the best piano samples you like but
if you don't have software and hardware (only ketron italy, ketron aj and some more have I suppose) you cannot create .ins file then:
- you can only create msp file
- you can have stero sample (you can have it only create Left and righ msp separate then use 2 of 3 voice program slot, is not best way
- you can not create multy layer sound (the same can create in program using 2 slot with 2 different layer but is not good way, and then are mono sounds)
- only about that you can't create stero file you must understand that all you try will be very bad result.
- audya don't have hardware and software like korg, that use oscillator then want big good piano ? need more more ram, in korg I have sampled the ketron piano in 8mb an play better then original (usin multy layer with same samples)
forgot mps audya

I really hope new software has news about it