One very common thing when a K5 cannot receive is to make sure that the
send and receive channel is set to 1, as many programs default to that setting.
The other thing I have to tell you Pablo, is that the K5 is not the right
instrument for the bread-and-butter sounds that you are looking for - except
perhaps Hammond organ sounds. This is a synthesizer for experimental music
making and exploration of sound relationships. For a band I would get some kind
of ROMPLER, like a Korg m1, x3, x5, something with real samples of organ,
strings, piano, etc. The k5 can be made to do a decent job, but it's a lot of
work.
Joel