Researchers in the field of humanities disciplines such as anthropology and linguistic, work with a wide variety of documents: pictures, sound recordings, videos ... The time-based nature of these audio-visual materials raises issues of access and visualization. For sound recordings, it is essential to manage the sounds together with their associated metadata, in an effective way to enrich them. As there was no open source software available, the Research Center for Ethnomusicology (CREM, CNRS) and the Laboratory of Musical Acoustic (LAM) have been working together since 2007 on the design of an innovative and collaborative tool. The objective is to improve access, annotation and preservation of the intangible heritage. http://archives.crem-cnrs.fr