...using Serviio too, and the N900 happily plays along with it. I like it for it's clean minimal UI, and for supporting multiple platforms.

I'm working around the issue currently using CIFS with the Drive Mapper, as i have no dedicated home server for now (it's planned), but only my Win 7 x64 workstation. So no ffmpeg solution for now (time etc. restriction).

The Serviio guys stated that MP4 container is not stream-friendly, especially opening it while still writing to a partial container. i'm not that much into such details, this would need more effort to delve into on my side.

AFAIK they implemented support for WMA and OGG/FLAC only in 3.0.4? There was no record of improved video codec support. Do you have a reference? There's a 3.0.5 in the wild too...

Anyway, i apologize for capturing the thread.