instrument making

also is there an  easy way of mapping my pcr-500 to sonar so all pads and dials work without following the 200 page booklet that comes with it?
 
regards
Generate_R

Generate_R:
 
You can create your own instrument.
 
Use a softsynth like SFZ+ Professional which is available free from the Cakewalk store for free.  Then define your own mappings to sounds using the SFZ format.  A specification which is available here: http://www.cakewalk.com/DevXchange/article.aspx?aid=108
 
Hope this helps,
Paul

apologies if i am barking up the wrong tree here...
 
perhaps you may want to experiment with The Martix View. personally i do not use this function however, it allows for a some what efficient way to lay out WAV files to be used multiple times within a track... its some thing like a loop, trigger and player thinngy. seeing this in action once, allows control in terms of rows and columns, individual cells...etc. 
 
its relatively easy to drag and drop the WAV into the cells and then use the MIDI Learn to assign to the keyboard.
 
as mentioned above, there are plenty of sample playback devices avail, however, its extremely time consuming to really map out an entire keyboard range. (61 keys is bad enough, let alone 88 keys... ) i am not sure if your samples are keyed and tagged correctly, if not you may need to also specify the pitch ranges and quite a few other stuff... 
 
good news is when you are done with it all, you'd be the resident expert in the ADSR, Pitch and Formant Department. 

hope it helps... and all the very best... cheers!!!

Although it may be overkill for what you want now, I agree with Jim that Kontakt is the gold standard.  It will cost you a few bucks but 1-you will get a large library of instruments (both the library that comes with the free Kontakt player and the library that comes with the paid version), 2-you will have a very pro sampler, and 3-you will be able to get a lot of free or very reasonably priced soft synths / instruments that require the full Kontakt player.  Almost any serious company that sells samples will have Kontakt format (even if they have other formats as well).
 
I actually put that purchase off for a while because it was not critical, but now that I have it, I love it.