I haven't looked into the handle bar mounted radio but, think it might get crowded with my headlight plus radio and speakers. If the quality is even half way passable though it sounds like a good plan.
I currently ride with a very small walkman type am/fm. It has easy to push, without looking at them, station pre-sets. I use the ear bud type speakers. I use only one at at time, on the curb side and don't crank it up too far. I tape the bud not in my ear to the cord so it doesn't flop around. If the station is coming in well I listen to sports radio. I also really like good music and it helps me keep cranking and cranking faster. I guess it's psychological but, when I was running I flat could not do it without the tunes.