Fon is described as a “crowdsourced Wi-Fi operator” – it helps people turn their home broadband connections into public Wi-Fi hotspots for others to use, legally, via its Fonera router. Now it’s working on something related and interesting: a product called Gramofon. GigaOm uses an FCC filing in the US to dig out some details: “Gramofon will be a router that offers Fon-like Wi-Fi sharing functionality, but also includes an audio out port, as well as some music-specific features.” The company’s CEO has already teased the new product, telling customers that Gramofon would launch in April: “It’s a Fonera with a music player and other undisclosed features. It is a truly amazing new category killer product and we want to handle it like a start up inside Fon.” The device has two Ethernet sockets and an audio-out port, so is thought to stream music from people’s existing computers – although it would be interesting if Fon has a partnership with one or more streaming services too. Watch this space in April.