This small software can do amazing things 🙂
Using djmount you can access transparently all UPNP/DNLA from your network with your preferred media player. This program is also present in the Ubuntu repos!
After installing djmount, open a terminal and type:
mkdir -p media/upnp
sudo chmod 777 media/upnp
sudo djmount -o allow_other media/upnp
Now you can browse “media/upnp” with your favourite file manager like any other local filesystem (and play the contained media too!)