buddypress activity plus - Force video resiseze?

Note: I was unable to find a "buddypress activity plus" from the drop down menu in the plugin support section.

Let me begin by saying great job on creating this plugin!!!! LOVE IT!

I know that the plugin documentation states that "buddypress activity plus" works with default based themes but I'm using the Genesis Theme framework. So, I would like to a) know if there is a way to force a resize of uploads so that they fit better with the layout and b) how to go about making the changes.

Thanks in advance for any assistance you guys can offer.

Edit: I have added a link to a screen shot to give people a better idea of what I am refering to.