Playing music from external HD

I have my external hard drive plugged into the ATV with 3.6.2.
Can i play my external HD music through the ‘Music’ section of the ATV or do I need to use an application?

When I go into ‘music’ it only locates the files that are saved onto the ATV itself and not the external hard drive.

Thanks in advance.

The music menu item only plays music from iTunes. However you can use XBMC or Boxee to play music on another volume.