I have been going through some great science lectures I have downloaded from itunes U from Apples itunes store. You don't have to own an ipod to use them as they can be viewed for free on a computer. Unfortunately the sound quality on many audio and video lectures is very poor. We can take videos of great quality with inexpensive cameras but quality sound capture seems to require a lot of work. Why don't we have inexpensive devices which record quality audio, or do we? What suggestions might you give to some science department that might want to record their lectures in good quality sound? Is good sound capture hard to do? Thanks for any help!