Dimension Pro...Instrument Samples ???

Yo...

Posted an inquiry over at KVR on selling my XV-5050 & grabbing another, more quality oriented rompler (Yamaha Motif ES Rack, maybe.)...& a few peoples came back & told me to save my money & go w/ "Dimension Pro" instead...since the piano, drum & bass sounds are much nicer (& much more realistic) than can be had from the typical synth module.

This would be ideal for me since I'm running SONAR5 at present (notwithstanding the fact that I'd need to learn the software, of course)...& I'm sure Dimension Pro would interface smoothly w/ S5...

...but I was wondering...

...where can I hear these world-class pianos? (or any instrument samples out of Dimension Pro)...

...& how does it work...I'm assuming it's a software sampler & it has it's own instrument format?

Thanks,

mark4man