How can I view/transfer non-image files from my Samsung Galaxy S4 Mini to my computer? I have a Samsung Galaxy S4 Mini running Android 4.4.2 (KitKat), and a computer running Ubuntu 12.04.

When I plug the phone into the computer using the USB cable that came with the phone, the phone gives a notification that says "connected as an installer", and it shows up on my computer as a folder containing some unidentifiable files.  When I click the phone notification I can change it to connect as either "Media device (MTP)" or "Camera (PTP)".

When I connect with MTP, the phone shows up on my computer as a folder containing all the same folders that it actually contains (as viewed from ES File Browser on the phone), but from the computer those folders all appear empty.

When I connect with PTP, the phone again shows up on my computer as a folder containing all the correct folders, and this time most of the folders' contents are shown as well.  However, only image files seem to be shown (for example, I see .gif, .jpg, and .png files, but not .ogg or .mp4 files).

So, two questions:


Is it possible to make the other files show up, or not?
If not, is there any app that makes it possible?
First, when you say unidentifiable files what are you referring to? Second, PTP is only gonna display video based files(exactly the types you listed although .ogg is usually used for ring tones and such). Keep in mind that even though Android is a GNU based operating system, it may sometimes require a few tweeks in the terminal along with ADB to get it functioning properly with your device, hence the computer folders appearing empty.