I would like to introduce you to DroidXplorer, a simple little app with nothing more than one button.
Once you press that button you may open a web browser and point it to the address
presented in the app. Once there, you may view, manage and stream the media galleries,
or browse the file contents.
Download link: https://play.google.com/store/apps/d...op.droidxplore
Here's a video of the web interface in action
And here's a screenshot of the actual app
Firefox and Google Chrome supports uploading of files using drag and drop,
Google Chrome also supports downloading of files using drag and drop operation.
If you want to listen to a music file or watch a video file located on your device you can stream it to your desktop without downloading it first, of course this requires you to have the correct plugins installed on your desktop, for example VLC Player or QuickTime.
I hope you all find it useful.