My wife recently got me a nice little pocket digicam, and it had a slow motion video capture option. I thought I would test it out and try and capture one of those signature snake strikes, but my python wasn't in the mood for showing off. Ah well maybe next time. Here is a clip though that shows the breathing tube pretty well. Because of the slow motion aspect there is no sound.
Also, I'm sorry if this should actually be in with the picures.
Partial Sequence of a Ball Python Eating a Rat