Where can I find recordings of key sessions from Microsoft Management Summit(MMS)

Right here! There are several interesting recordings including discussion of System Center Operations Manager, an update on the Dynamic Systems Initiative (DSI).

Note: click on the name of the speaker to hear/watch the associated session recording:

The keynotes from both Bob Muglia (Senior Vice President of Microsoft's Server and Tools Business) and Kiril Tatarinov (@ the time he was the Corporate Vice President of the Windows Enterprise Management Division)

In addition there is an audio recording of Ed Roth (a network manager for a government institution & contributing editor / reviewer for Windows IT Pro) - Ed shares his view of today's IT challenges and how effective management plays a key part.

There is also a good session from Neil Macehiter ("a veteran IT expert and industry analyst") who looks at our progress with DSI and "the value of industry collaboration".