I have added SirsiDynix Stephen's Lighthouse Blog to the Blog listings and the SirsiDynix Institute to the Links.
The Institute has a lot of information about library developments, issues to consider etc. In addition, it has seminars that can be listened to online (after the event as they take place when we are asleep) - or better still, subscribe to them by podcast. Now that I have discovered that I can subscribe through iTunes, I'm on to it!
The link to read about the podcasts is here.