I'm lazy and am not usually sitting at a computer when I want a file off of it. I transfer via WIFI with ES File Explorer.
Can you give some detail? You transfer from what?
How does WiFi help you to transfer the file?
How does ES File Explorer know about this file?
Where do you put the file on the Nexus 7?
How does the reader or player then find the file on the N7?
I transfer from any of the computers/drives on my home network.
I transfer with WIFI so I don't have to get up from my easy chair and plug a USB cable into a computer.
The ES file doesn't know. I do.
Depends what kind of file it is. I have folders for books, movies, television, etc.
Depends on the app. Almost all of them have search functions.