It seems to me like you're trying to use Drive for things Drive isn't designed for. Drive doesn't sync like Dropbox does. When you put a new file into the desktop version of Drive, it doesn't check to see if the file already exists online. It'll simply say that there is a file of the same name within the online drive account and will force you to change the name of one of the two files. It can make sure that two files don't have the same name, but doesn't keep track of whether or not two files have the same content or data enclosed in them.
Basically, to drive, if you put a song in the online folder from the internet cafe, then put that exact same song in the drive from your home computer, the only similarity Drive cares about is that their filenames are identical.