Commencing May 5th, the New York Court of Appeals will broadcast oral arguments live via the web. The link is available on the Court's website: http://www.courts.state.ny.us/ctapps/. Scroll down to "Court Calendar and Case Summaries" and the link will be found to the right. The case summaries themselves are very useful - they are synopses of the facts and issues in each case.
At some later date, an archive of argued cases will be available on the website. Until then, the best source remains the Government Law Center at Albany Law School.
Much thanks to Frances Murray for sharing this news!