Vienna Symphonic Library Vienna Key Protection device for allowing you to use any Vienna Instrument library Developed by Syncrosoft, this protection device allows you to run whatever title you purchase on one computer If you have multiple collections, and want to run different instruments on separate computers, you'll need more than one Vienna key You can move licensing information between USB keys, but you can't have the same Collection on two keys at the same time The Vienna Key also gives you 180 "starts" if you want to demo a product first, which includes instantiating an instrument, loading a collection or instrument, and auditioning them