Since the Symbian menu hierarchy is rather complicated, I challenge you to find on your own the "Home Media" application, and lunch it. After the wizard completes, you should be able to share media files (pics, videos and music) between other devices you might have, and the mobile phone.
This way, If you have a PS3, just let it scan for network devices, and see how it finds the mobile phone and displays its contents. It can even stream music from it.
After I managed to successfully play files from my N95 on my Windows Media Center and play files from the PC on the device (requires Windows Media Player 11), I decided I should try my favorite Media Center software - Elisa. Since Elisa is DLNA compatible, and is open-source, I had thought this one is gonna be an easy task. So I was wrong. I am yet to crack this thing. For some reason, Elisa refuses to see other devices, and doesn't display the N95. As far as I can tell, no one has succeeded yet in doing so.
So as I was about to give up, I decided to put Apple's FrontRow to the test. Nada. Doesn't work as well. So I'm stuck with Windows software.
Now that you know your N-series device has such an amazing capabilities, please go on and try to make it work with Elisa or a different open-source Media Center software. I would really love to see this one working.