Sound Advice

Not long ago, a hotel guest's options when it came to musical entertainment were limited to Muzak on the blackened channels of the TV, or the tinkling of a lobby pianist. Nowadays, of course, you can carry your entire CD collection around with you on an iPodand there's also Internet radio with thousands of online stations available for free through your laptop. Don't know how to choose between them? Here are four surefire hits for while you're on the road.

LIVE365.COM The world's largest Internet-radio network offers some 300 genres, with everything from psychedelia to barbershop,...