Some work environments are suited for cranking a community radio, like shipping and receiving, union facilities workers, construction sites, etc. But nowadays, the professional office cubicle setting is off limits.
The trend I see now with the gen X-ers (or whatever they're called), are the earbuds - everywhere, all the time. They wear them when you're talking to them (maybe they pull one out); they wear them going down the hallway; they wear them in the cafeteria; they wear them in the restroom. Sometimes I wonder wtf they're listening to, since they wouldn't get external reception, so it has to be just some big library of mp3 music, or maybe a downloaded audiobook.
I have a nice pair of Sennheisers that I use at my desk. They do the job.