What is FLV?
FLV, or Flash Live Video file, is a preferred file format that is designed for web playback, offering high rates of compression to deliver video over the Internet using Adobe Flash Player.
FLV content cannot be played back directly but must be embedded in (or linked from) an SWF file. You create (or download) a "container" SWF file from which to play the FLV file. The most common approach is to use an SWF file that functions as a media player with screen and playback controls. Notable users of the FLV format include YouTube, Google Video, Reuters.com, Yahoo! Video and MySpace, you can downloaded video from youtube to your computer with flv converter programe,it Integrates the FLV Downloader to the program., it is able to save and download any streaming video from youtube,Google Video, Myspace, Metacafe, Dailymotion, iFilm, Music, eVideoShare, StreetFire, etc. off to your computer's hard drive free.
Download Moyea FLV to Video Converter and intall it on ur computer.
Once Moyea FLV to Video Converter is installed, launch the converter program.

Add File
Click on the "Add" button on the tool bar to import your target FLV files into the program, by following the instructions.
Select the output format and change the audio and video settings
In the pull-down menu of "Export Type", choose "WMV" as the file format; and in the Sub-type, you could choose the proper device for your output file: WMV for PC, or WMV for Zune, or just wmv for your Cell Phone, 320*240 frame size..

Different sub-type will require different dimension or frame size of the video. Be default, the program has been preset the proper frame size for the most popular playback terminals.
If you want to extract the audio from the video, just check " Audio In output files " box as the output file
Once you have set WMV as the output format, you can change the video and audio settings for the output file, including the codec, frame rate, bit rate, audio channel, etc.
Select the output directory and convert
When all the parameters are set, you can select a convenient output folder for you file in "Export To" and then click on "Convert". Then u can put the converted video on ur phone via USB cable and enjoy it.