Playing the model
The samples are made playable as a model of the original organ via specialized software such as Hauptwerk (See http://www.hauptwerk.com), or Cecilia VPO (See https://www.smartorgan.eu/), or GrandOrgue. There may be more similar software appearing from various vendors. The software can usualy be installed onto Windows, MacOS, or even Linux based computers. When these computers are controlled with MIDI (Musical Instrument Digital Interface) keyboards, the virtual models of the original organs can be played in real time by interested individuals in homes, schools, and churches. The pipe organ emulating software is usualy designed to minimize the need to be technically savvy. For example, it has the ability to auto-detect various MIDI hardware and settings, eliminating the need to perform complicated configuration by hand.
Consoles created for use with pipe organ emulators can be as simple or elaborate as desired. Various vendors sell MIDI keyboards, pedalboards, and other necessary parts, and there are companies selling pre-built complete consoles for use with a virtual pipe organ. Another option is to use an existing digital organ’s MIDI capabilities to control the models (while ignoring the digital organ’s own voices). Some individuals even add MIDI capabilities to a disused pipe organ console. The choices depend on an individual’s budget, needs, desires, and technical understanding.