Originally Posted by: EddieBskiHow can Song Surgeon or something similar be applied to a Guitar Tricks video to slow down the video speed?

Don't know about Song surgeon, but, first you download the particular video, then use Song Surgeon or Quick-time player to open it.
For quick-time, click on window on the menu bar, click show A/V controls a window opens, look to the bottom right you'll see playback speed move it to half and viola.
Hope this helps.