I don't know of any/many IRC clients that have audio/video support. If you're referring to MSN Messenger/AIM/Yahoo, then that's different.

Well there are several that do support Audio and video and have been doing for over 10 years, I did do a search for such a windows based IRC program that supported video & audio, but I wasnt able to find any that had. The ones that I know that do are IRCle, which has been around sence the late 80's and Xirc. There are at least two IRC programs which I know of that support both video and audio and that there are possibly others out there as well.

And you are correct Yahoo, AIM, MSN messenger are different of course, but they originaly all three did start out the same way, just text, but they evolved. Why can't mIRC do the same? confused