Yes, that's right.

There are a lot of DLNA servers, including Windows Media Player on windows, Twonky, and a few others. PS3 media server is specific to the PS3 and transcodes on the fly however.

My phone has DLNA built in, it will stream pictures, music and video over wifi although the PS3 doesn't recognize .3gp extensions for videos so I have to reencode them.

Hey I'm an F'n Jerk!