Forget file browsing. Try finding a decent cdburner GUI frontend that doesn't pull in a bucketload of either KDE or GNOME dependencies!
I was a long-time KDE user and about a year ago decidedent to experiment with banning both Gnome and KDE from being installed and relying on lightweight window managers. It was only mean to be an experiment, I didn't really expect to go more than a week. Today I am using StumpWM combined with the pager (and only the pager) from Lxde. The only thing I really miss is K3b. Seriously, why does a program that is just a front end to cdrecord, which is more than capable of finding my burner rely on some integral part of KDE. If I install it without KDE it tells me I have no burners! Gnomes equivalent program did the same thing.
I guess I shouldn't complain too loud though. Maybe someday I will take the initiative and write my own burner front-end and not require a bloated desktop to run it. You can write the file manager!
Hello! I've considered looking at StumpWM, but I'm rather attached to my current setup with i3. If I may ask, why is it that you chose StumpWM over other window managers? What features does it have that you couldn't live without, in comparison to before? I haven't met many StumpWM users, so I haven't gotten the opportunity to ask this question...