Xing's StreamWorks offers impressive real-time MPEG audio (layer 1 and 2) and video (layer 1) technology for Windows users. ISDN users and direct 'net connectors will enjoy the ability to check out continual A/V signals from StreamWorks servers, but 28.8 Kbps and 14.4 Kbps users will likely find the waters quite a bit rougher.
In fact, at 14.4 and even 28.8 Kbps connections, real-time video is actually closer to a still image than a movie, and audio, while decent, is nowhere near the quality heard on the radio or even from competitors like RealAudio and VivoActive. 33.6 and especially 56 Kbps users will fare better with fewer delays and overall quality nearly on the level of the competition.