Well I just disagree with D-UK.
A standard storm 2 studio setup can include four instruments/modules,
as well as three fx units.
As well you can use Rewire, to initialize another instance of the software, so, if you did this, you could have up to 8 instruments/modules, and six fx units, all being recorded down onto a stereo master output etc.
(or record out seperate tracks) at one time.
Of course, you can make samples out of particular groups of tracks so you can then.....re-use instrument slots etc.
Other software packages have advantages and disadvantages, as does storm 2. I would say, that storm 2 is a great program that has a very fast learning curve, and it's also very simple to make music with.
Even though there are alternatives, I would recommend storm 2 to
anyone as being worth the money, also, the demo does allow you to try out the software enough to make a decision as to if it's worth purchasing.
Finally, the manual that comes with the software is very nicely written,
and, you can access all that information from the actual demo software,
so just play around abit, and you will find your answer.
gl