Updating the Radio/Nav system?

[steverob]

I have a 2013 XC60 D4 SE Nav, with a great in-car entertainment and navigation system. It all seems to work well together, but I'm getting a bit restless concerning the radio, which is AM/FM. Has anyone upgraded the radio to DAB, and if you did, how? Ideally I'd like an OEM radio so that the whole thing works together but I suspect it would also need a software upgrade as well and have no clue how to do that.