How to share Twonky library over internet (using dyndns)

The problem:

I had funplug & Twonky Server 7 running on my Dlink DNS320 (guide: http://nas-tweaks.net/384/installatio...)

Now I want to share my Twonky library over internet using dyndns but failed.

Attempted:

I modified [dyndns] section in the file: /ffp/opt/twonky/twonkyserver-default.ini

dyndns=http://myown.dyndns.org:50001
but the library links still show local IP, for e.g:

http://192.168.0.100:9000/disk/DLNA-P...