The introduction of Microsoft Windows Multimedia Extensions provides a good deal of built-in MIDI support. For one thing, it allows you to play MIDI files created in QuickScore Elite through the Windows Multimedia Player. For another, it provides a basic interface into which various manufacturers can plug in software modules called drivers. These small applications are what allow your computer to interface with various peripheral hardware devices such as sound cards and MIDI interfaces (not to mention printers and hard disks). This means that virtually all Windows programs, including QuickScore Elite, can access virtually any hardware device (sound card, MIDI interface, etc.) supported by Windows. For this to work successfully, however, you must make sure that the drivers you require for your particular system are correctly installed.