The php and config file are just like the ones you described in the tutorial. Only new thing I had to do was changing converted videos permissions to allow flvtool2 to work on it.
The video loads up fine via lighttpd (running on port 8080 for now), but with no seeking/streaming. I assumed that the metadata didn't get injected well, but it is there. I have attached the injected meta in the flv file using -P option of flvtool2.
Could you guess what might be happening ?