Multicasting is another technology that might make HD Radio more competitive with satellite. Multicasting works by dividing a station's digital bandwidth so that it can stream multiple broadcasts. This allows stations to offer more variety in its programming, meaning that your favorite oldies station would be able to broadcast a second stream dedicated just to the Beach Boys (heaven forbid). At the forefront of this technology is National Public Radio, which announced that it will begin offering five new types of music programming to multicasting stations.
Obviously, HD Radio has a long way to go before it catches on in the mainstream--and catches up to satellite. But it provides an intriguing option, and possibly another reason to love radio again.