In a virtual learning environment with contents that follow textual and graphic (image) formats the correct reading of formulas and mathematical expressions is not feasible. The students of such non face-to-face simply do not “hear” how the formulas are read and therefore they can not access that important competence. Making use of the technological possibilities to digitalize the human voice and later to enclose the files of sound to web texts, a team formed by professors and technicians of have designed and implemented a first prototype of an open, collaborative and multilingual repository of locutions of mathematical formulas. The repository and a study case of its use will be presented.