This is an old revision of the document!
Installing Twonkymedia UPnP Server
This will allow proper UPnP serving to Playstation 3 & XBOX360 Consoles - something alot more interesting now they both support mpeg4 (Divx/Xvid) Codecs. UPnP is improved in 1.04 firmwares but this will add the feature to 1.03 Firmwares. This tutorial is originally from here - PS3 Forums
TwonkyMedia isn't free, but it includes a 30-day trial. According to their website, it currently costs $39.95 for a TwonkyMedia license (version 4.3).
Instructions
Enable telnet
To install TwonkyMedia, you must first enable a telnet server on the DNS-323. Some might consider this hacking, and it does require some basic knowledge of Linux, so if you're not comfortable with Linux or don't want to modify your DNS-323's startup process and config, I would not recommend proceeding. (This is not a permanent change and can be easily backed out.)
Another way (and the way I went) was to install MLDonkey, which not only installs Telnet but also a edonkey/torrent interface for your DNS-323, all by copying a few files via ftp.
Install TwonkyMedia 4.3
Now, you can install TwonkyMedia version 4.3 for D-Link DNS-323, twonkymedia-dns323.zip. Originally from Here.
Windows
The archive includes a setup program that will copy the necessary files to you NAS, and modify the boot files accordingly - no setup necessary. You just need to run the NASSetup.exe program on your PC, then follow the instructions.
The TwonkyMedia server will be installed at /mnt/HD_a2/twonky.
The TwonkyMedia autostart script will be installed at /mnt/HD_a2/starttwonky.sh.
The TwonkyMedia web interface will be accessible at http://<fill in your DNS-323's ip address>:9000/configpage/index.html
Other Operating Systems
If you need to install via some other operating system, you will need to FTP the files, and modify the autostart file, fun_plug to start twonkymedia. (Please extend these instructions).