a. Web-based delivery of 6 channel surround sound
b. ability to provide HDTV-like video quality at file sizes half that of today’s DVDs

just imagine all these cool trailers in 6 channel HDTV quality...... <img border="0" title="" alt="[Eek!]" src="eek.gif" /> <img border="0" title="" alt="[Eek!]" src="eek.gif" /> <img border="0" title="" alt="[Eek!]" src="eek.gif" />

</font><blockquote><font size="1" face="Verdana, Arial">quote:</font><hr /><font size="2" face="Verdana, Arial"> Building on the industry-leading Windows Media Audio and Video codecs, "Corona" introduces two new professional-level audio and video codecs. The new WMA Professional codec is the first codec to enable Web-based delivery of 6 channel surround sound with full-spectrum, full resolution audio (24 bit / 96 kHz sampling). A new version of the Windows Media Video (WMV) codec provides a 20% efficiency boost compared with the previous version and now introduces the ability to provide HDTV-like video quality at file sizes half that of today’s DVDs, for local playback on the PC.

Fast Streaming delivers an "instant-on, always-on" streaming experience for broadband users, effectively eliminating the ever-present buffering delays. Fast Streaming also automatically optimizes the delivery of streaming audio and video to take advantage of the full bandwidth available to the user, which vastly reduces or eliminates the impact of congestion on the Web for broadband users.
</font><hr /></blockquote><font size="2" face="Verdana, Arial"><a href="http://www.microsoft.com/windows/windowsmedia/thirdgen/default.asp" target="_blank">Windows Media Corona Home page </a>

<a href="http://www.microsoft.com/windows/windowsmedia/demos/producer/Producer_Fast_Streaming/Fast_Streaming.htm" target="_blank">Windows Media Corona Demo </a>