Hi
In the Blues 2, at this chapter: The Minor Scale in a Performance Context by Andreas, the jam track start immediately and automatically when visualizing the page. This happens only when using Chrome by Google as web browser, no problem with Firefox.
These are the links:

http://www.guitartricks.com/lesson.php?input=13280&c_id=16&ch_id=95&s_id=800

http://www.guitartricks.com/lesson.php?input=13281&c_id=16&ch_id=95&s_id=800

http://www.guitartricks.com/lesson.php?input=13282&c_id=16&ch_id=95&s_id=800

If anyone is having this problem while using Google Chrome, just click on the Jam tab and stop the player.

Carmine