Your welcome! :) I'm pretty sure there is a better way to do it, but this way worked pretty good for me lol. When you do export it as a .exe to share with your friends, make sure you include your music, and sounds folder in the same folder as your .exe just like you did with the .cap, and you will be jut fine. You may want to put everything it in a .zip folder after you export it, just to keep everything nice and tidy!
Oh! As an extra note, when you do share it, they will have them download the dxwebsetup application in the Construct folder so that they can actually play your game. :P
This is what it looks like.
So it is best to make a copy of that, and put it in the folder with your game too, so others can play it.
Hopefully I made sense. :)