Where are you playing the file from? Did you copy it to a server or are you testing on your own PC and seeing the issue?
If you copied to a server, did you remember to copy the FLV file?
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I am testing it on my PC first, which is where I am having the
issue. Do I need to publish it to my web server in order for it to work?
The video file is located in the same folder I am testing from.