Yes this is my software 100% written by me. I read many books on gcode, grbl documentation and practical machining to get it built but I think it's a great platform. I am sorry to hear that you cannot hear it from your computer, it's blaring loud when I play it from youtube on my computer. Out of curiosity have you tried headphones maybe? Are you using external speakers with a volume control? On my laptop I have to turn it down it's so loud and when I recorded it the mic was almost all the way to the top so I'm not sure I can make it any louder then it already is.
It traces and exports to .DXF format currently, I may add more options in another up-coming release. Sketchup imports .dxf so it works with that well.
Edit: Also hover around the bottom of the video and make sure the youtube plugin/ player is also set higher.