Satellite Direct Tv

Can AppleTV access files from a NAS drive wirelessly through a router if a PC is not turned on on the network?

Is it possible to use an Apple-TV box to wirelessly access files (iTunes Apple Lossless) over a network if there is not a PC powered up on the network? The files are stored on a Western Digital drive which plugged into the wireless router and is accessible using a IP address combined with a username and password.

Nope.

HDHomeRun – Stream TV over your network