Collection of pros by XLN Audio. XLN Audio is a music software company located in Stockholm, Sweden. Since the company was founded in 2004, XLN Audio’s main goal has been to develop market leading music creation tools that are inspiring, powerful, and easy to use. XLN Audio’s pros offerings include the award winning virtual instrument Addictive Drums along with its many expansion products, and 2012 saw the release of the new Addictive Keys product line. List inside.