Found this relevant article helpful. Maybe it can help others as well:
To make certain file types OPEN on your computer, instead of Chrome Downloading...
You have to download the file type once, then right after that download, look at the status bar at the bottom of the browser. Click the arrow next to that file and choose "always open files of this type". DONE.
Now the file type will always OPEN using your default program.To reset this feature, go to Settings / Advance Settings and under the "Download.." section, there's a button to reset 'all' Auto Downloads