Jerky Pictures and Sound Are History. Videoconferencing Is All Grown Up. - New York Times: "When Kevin Callahan started offering classical guitar lessons over an Internet video link, he wanted the sound to be as close as possible to being in the same room. After experimenting, he built a system that channeled three guitars, a microphone, and an orchestral synthesizer through a professional mixing board to his Macintosh. From there, he blended the sound with Apple's GarageBand software before sending it out over the Internet.
'It's not necessary,' he explained a bit nonchalantly, 'but it gives me quite a bit of flexibility.'
Now, he sits in his studio in Seattle and teaches students in Florida, California, Massachusetts and Spain. Some of his local students even use the system when time or illness keeps them from traveling to his house."