This topic was posted before, but it would not let me reply to it so I am recreating it. While setting up my configuration i notice a few errors in the instructions. It took me forever to figure out how to make this work right so I figured I would get everyone the exact instructions. To correclty setup remote media streaming on your MBL follow thes instructions:
What I did was:
In the router: forward the port 9100 to MBL
Register a Host (dns address) to your external IP address (I used http://freedns.afraid.org/, it’s free)
Edit the file /DataVolume/cache/twonkymedia/twonkymedia-server.ini (Use SSH to access the system files on the MBL. http://community.wdc.com/t5/My-Book-Live/Telnet-or-ssh-my-book-live/td-p/87065
enableweb=2 (This is for editing the twonky server settings via the web. After you get everything working properly it can be changed to 1 so that users cannot edit your settings when connecting to your server. You will be forced to manually reset the MBL to reset the Twonky server after making this change.)
Navigate to :9000 using your web browser and reset the Twonky server in the settings section.
Access remotely to: http://<dns_address>:9100
If everything works as expected you’ll be able to play your media using your web browser. I hope this is helpful, feel free to ask questions.