How can I drag and drop files (media files specifically) in my Unity. While playing videos or music, if I like to drop another file in the totem/vlc media player, how to do it ?
Drag-and-drop works brilliantly in Unity (in 11.04). You can drag and drop both directly onto open windows, or onto the applications launcher.
In the screenshot below I'm drag-n-dropping a video file. The launcher fades the icons of all the programs that can't handle a video file, leaving only Banshee and Totem. Note that in this example then Totem is already open, but Banshee isn't. Both light up to allow you to drag-and-drop into them.