The link will take you to the live show on YouTube. It's my understanding that you are permitted to ask questions and comment via message (in real time), but, in order to actually participate (i.e. with video and/or audio) you have to be "invited."
So, if you would like to participate this way (i.e. with video and/or audio and not just through messaging), please let me know shortly before 9pm so I can invite you (it requires a gmail account). It's a practice round so I'd understand if you didn't want to directly participate and, instead, would simply rather watch the show for laughs (as I will likely mess this up).
Thanks again for your support. Hopefully this will make the first Live show on August 15 run better.