Quicktime file not emailing from mac to PC correctly?
There are 2 applications on Mac called Quick Time Player.

One is the Quick Time player (without the 7), 

The other is the Quick Time Player 7.This one is only basic and can be upgraded to Pro version at cost.

You should be using the QT player (without the 7) to send file via email.

To do that open the file in QT player and click on File - Sharing - Email.

If the file is to big to be sent by email use Dropbox then upload the file there (as you have done already), but make sure you are uploading the correct file. If it is audio it will be at least 5 meg or more (certainly not 14k).