A sample library is a collection of digital sound recordings, known as samples, for use by composers, arrangers, performers, and producers of music. The sound files are loaded into a sampler—either hardware or software-based—which is then used to create music. Sample libraries appear in a variety of forms:
The term sample library, when used in a commercial context, implies a collections of samples that have been produced and licensed for the purpose of being used as samples. Such a library, sometimes called a sample pack, can be distributed either physically (on CD or DVD) or over the internet. Some sampling websites, such as The Freesound Project, utilize user-generated sample libraries.
Individual sample packs can often be found in online libraries or website directories that host the files (free or paid) for download. It is important to know if the samples being utilized are royalty-free or having certain usage restrictions (such as not being allowed in commercial content) when downloading these files. Usually this is stated in the usage rights of the pack or under the Terms of Service on the website they were downloaded from.