Port 8001 in your router forward to LAN address of your vuduo2, connect to the vuduo2 via Open Webif in your local area (LAN), in bouquets section press TV symbol near your bouquet you want to watch and it will create m3u file with your favorite channels. Open this m3u file with notepad++ and you will see something like
LAN IP addresses (in my example 192.168.1.55) change with your dyndns domain name, save it and if port 8001 is forwarded correctly (I think it is static in your net), open this m3u with VLC Player everywhere, where internet is fast enough and you'll see these favorite channels. But don't forget about a huge amount of leech, scanning for open ports with streaming video
It will be safe to open 8001 port only for specific address, or some addresses, from which you want to watch your streams. If someone is leeching, you'll see by the used tuners. If many leechers, you'll see a message "There is no free tuner"