444342 Lighttpd Server cento os linux http pseudostreaming

I installed Lighttp server and host flv file. but some of my Flv file do not stream well. but some streams well. some of my flv files larger than 2 gb. if u know how to stream with lighttpd or pseudostreaming, please bid. There are huge flv files. I use social media scripts from mediascripts.com. I will send payment after u finish the job.