Mixing sound in headphones has always been a very attractive idea. They are portable, allow for surgical listening and are very affordable when compared to the cost of an adequately treated mixing room equipped with high-fidelity loudspeakers. The approach in this project was to design a workflow permitting to mix in surround format while monitoring through headphones. By reproducing the filtering responsible for accurate localization of sounds that occurs in the human auditory system using Binaural technology, a portable “virtual mixing studio” was designed and employed in the creation of three surround soundtracks for film material. Chapter 1 of this paper gives a description of the 5.1 surround system features and Binaural technology. Chapter 2 outlines the tools used to design a workflow allowing to produce and render a mix in 5.1 format. Chapter 3 describes the process of creating a 5.1 mix while monitoring through headphones. Chapter 4 provides a description of a listening experiment: aims, method, result, and discussion.