When we looked at Vienna Solo Strings a few months ago, mention was made of the ways in which its audio samples can be controlled… parameters changed; presets configured and saved; sound properties experimented with, and so on. By default VSL’s bundled Vienna Instruments usually handles such control; you are referred to that review for this context..
If you want greater flexibility and more features, though, VSL also has the very reasonably-priced Vienna Instruments PRO, the recently-released version 2 of which is examined here.
North American distributors:
Virtual Instruments (VIs) allow you to work with lifelike sounds in sequencers and Digital Audio Workstations (DAWs) like Apple’s Logic and notation packages like Avid’s Sibelius. (Avid has just announced Sibelius 7: watch for a review here shortly.)
VIs are collections of acoustic/sampled and/or electronically synthesized sounds with varying degrees of realism and flexibility of use. Formerly hardware-based, VIs are now available almost entirely as software. They range from the cheap, barely tolerable and tinny to… well, to those produced and sold by Vienna Instruments.