Sample libraries including a KONTAKT Player sampler are offered by renowned sample producers and are also available directly in the Native Instruments Online Shop. They are a perfect combination between a sample library and an excellent sample player, and are based on KONTAKT technology for highest performance and sound quality. This makes it possible to user the library instruments right away, standalone or as a plug-in, without needing another sampler.

The instruments of the respective libraries can be individually adjusted in volume, pan, and tuning. In addition each instrument includes up to five additional sound controls, which vary according to the instrument (for example attack, reverb, brightness, etc.). KONTAKT Player offers up to 128 stereo voices, 1- or 8-part multitimbrality (depending on the version), 8 stereo outputs (for the 8-part version), and sample resolution up to 32-bit and 96 kHz (depending on the host and the library). Key/controller activator and other professional playback technologies are also supported (but not editable).

KONTAKT Player can only load the instruments from the library with which it came. It runs standalone and as a plug-in (VST, RTAS, DXi, Audio Units) in all popular sequencers under Mac OS X and Windows.