Most title matches can be seen live nowadays.
There are a few options:
Except for the Kisei title most title matches are covered on IGS.
Besides, lots of preliminary matches such as semi's and quarter finals are streamed live.
IGS Pandanet is a nice place to have technical discussions about the game in the chat.
Since it's a Korean server expect mainly Korean events to be covered.
Just google to find the URL of the live coverage.
If available, use the 'subsribe' option (just below the video) to get future notifications.
The Nihon Ki-in uses the following tag for relevant videos: