Tired of crachouillis (at worst) / breath (at best) that delivered my FM tuner (a Marantz 7003 already), I started to listen to the radio through the optical input and output of my PC motherboard .. . Briefly, from the Internet. What a difference ... and then I ended up looking for a small object that would simply allow me to broadcast my music, whether from the PC, the TV, the internet or NAS. What a treat! The plus? Being DLNA compatible AirPlay, I can read from my PC music sockée on the NAS (XPEnolgy) and hear via the MCR 510, taking the hand directly. The little less. The application does not work as NEXUS perfectly.