New technologies offer to the designers a great opportunity to extend their creative abilities from the design of forms to the design of experience. Unlike technical mechanical devices which impose through their internal logic a shape and an interaction mode, today's products, often reduced to beautiful boxes with screen and buttons, contain electronic components that offer a great freedom of shaping and possible interactions. The question designers are facing with is how to exploit this freedom of shaping for designing acceptable products and reducing the apparent complexity without reducing functionalities. What are the guidelines underlying the design for experience and how to design rich experience products? This article examines the relationship between the product's design parameters and the user actions as being a potential factor of success for digital products. The axioms of the Axiomatic design theory have been used and transposed in order to design innovative User-Action Oriented interfaces. Through an Axiomatic Design analysis done on 4 music players, we propose to extend the equations between Functional Requirement (FRs) and Design Parameters (DPs) to the User Actions, and we propose a rule for better integrating the user experience in the early design stage of the design process