How can I open files in the Coda editor file browser using the keyboard?

Question

I am using coda as my main editor on mac. But I want to use just the keyboard for navigating through file browser. This I was able to quite easily by installing the plugin to switch between editor and file browser and then turning off the feature which opens files on a single-click or when it is focussed.

Now my problem is how to open a file in editor when I press enter - the file rename mode gets activated when I press enter while navigating in file browser. any ideas?