Sample library instruments come in a variety of formats, and depending on the format, they may be used in different ways.
If a product is listed as a "Plug-in" then it is ready to use within any major recording program on both Mac and PC, such as Logic, Pro Tools, Digital Performer, Cubase, Nuendo, Ableton Live, GarageBand, Sonar, and more.
Plug-in instruments contain a sample library and a sampler engine so that you can install the library and begin working immediately without purchasing anything else. Specific install instructions are included within each instrument.
The most common sampler instrument formats we sell are Kontakt Player, UVI, and Engine2.