Connect Trisquel to popcorn hour (ethernet cable sharing files)

Hey,

I have a popcorn hour a-100. It's a media player that can, apparently, connect through cable (rj45, or ethernet) to a network and play files that are shared in that network.
I have connected the laptop to the player (directly, cable from laptop to player) and installed samba and nfs-kernel-server. Tried using dhcp automatic, tried mannually configuring ip, but still neither trisquel or the popcorn hour can see each other.. Tried with 2 different cables, that I know are in perfect condition.

Any idea how to connect my laptop to this laptop, so I can share a folder and have the player play files from it??

Thanks!!