.flv file wont work

I am trying to have a flash video play on my website, when I bring it into dreamweaver its previews fine, but when I upload it to the server, it comes up as a white box. I tried uploaded both .flv and .swf files and also tried uploading the files using different computers, but no such luck. I have read many forums, but none seem to help. Any ideas?

Just a little background stuff to make sure we're all together on this. An flv is a flash video compression (the only other one being f4v). These can not just be loaded onto a web page natively like a WMV or QT. Instead they require a player that calls (loads) the video and provides controls for the video - this is our SWF file. The SWF file can be very simple such as just player controls that call one specific file or they can be very complicated such as player controls with built video searching, dynamic video loading, and more. A major advantage to flash video (besides countless others) is that custom controls can be created to match a page's design (such as on my site, which I will post a link to if it's uploaded soon).

When you create your player (swf) it will have a specific path to the video file. This path can be an absolute URL, in which case you'll need to make sure the video is at the location; or it can be a relative path, in which case you'll need to make sure that path remains the same during upload.

For instance, I export my players with relative paths "assets/videos/___.flv" so no matter where I place the swf file on my server, the video needs to be in a folder called videos, which needs to be in a folder called assets, which needs to be in the SAME folder as the SWF file. Then I can link the the SWF file in my HTML page.

Make sure the paths are all accurate, if they are then I may know of other issues that could be occurring. Best to start with the simple checks first.