Hi I bought a ROLAND DUO CAPTURE, It came with sonar x1 se SOFTWARE.
 
I got a track that was recorded long time in WAV.
 
Is it possible clean up the hissing with the software or does this not work with tracks not done with the software ?

Ah let me rephrase this.
 
I got Sonar X1 SE Software.
 
I have an old track recording in wav.
 
Is it possible clean up all the hissing and background stuff, or Does this only with tracks recorded with Sonar ? If it can, how on earth do I work this ? Thanks for your time in advance.

It is possible to clean up hissing and background noise from a pre-recorded WAV file, but I don't think SONAR X1 SE comes with the best tools for the job.
 
It might have a gate and EQ built-in which would get you some of the way there.
 
Personally I use Adobe Audition 2 which has a great noise reducer.

IIRC the free Audacity audio editor has some decent tools for the job as well.

I do see a plug in listed for Noise gate etc, How do you even use this software ? It did not really come with a book, it was just free with the device I got.
 
The hiss is not extreme so SONAR just may do the the trick completely