The article focuses the imminent choice of the Brazilian Digital Radio System (SBRD), taking as a privileged object the analysis of the Ginga middleware, developed for the Interactive Brazilian Digital TV. Pointing to the importance of collaborative and independent research carried out by citizens engaged in defending the Digital Radio Mondiale standard for Brazilian Digital Radio, we argue for an emerging dynamic spectrum management that makes obsolete its historical and exclusive use governed by concessionary regimes. Finally, we observe the commodification of the spectrum as an obstacle affecting the transition from analogue to digital and affirm a new paradigm of the spectrum as abundant and a technological common good.