Chris_Pratley's OneNote WebLog : OneNote for Audio and Video Notes: "As you may know, OneNote can record both Audio and Video if you have the correct hardware (you need SP1 to be able to record video). What many people are not aware of though is that in addition to plain recording, if you also type or write notes while you record the recording is linked to what you put on the page. So in a way your notes are like a table of contents for the audio or video. You can later click on an icon that appears next to each line of what you wrote and cause the audio or video to jump to the moment in the recording when you were taking those particular notes.
You might be concerned that a long recording will use up too much disk space. You might be surprised to know that a 60min audio recording will take up only about 5MB on your disk. A 60min video recording is only 60MB. This means on a typical machine that has just 10GB of free hard disk space (mine has 50GB), you could record for 8hrs/day for every working day of the year. Even with video and 15GB free you could record 1hr every working day for a year. These days we lose track of just how much storage there is on our hard disks, and how good compression of media has become."
Another outstanding post from Chris Pratley, including OneNote customer case studies.