Today, I transferred approximately 200 music files into my mobile phone, but when I tried to play them, only 30-35 files were showing up in the media player. After a quick check, I found that the player in my mobile phone can only play WAV and MP3 files. When I looked at the files, they were mostly in FLV format. So, quickly done a search on the Google and found this tiny tool, which is just 500KB. It is really an amazing tiny application, which took less than half a minute to install and only few seconds to convert all the 170 FLV files into MP3. Quality remained intact.
Download FLV2MP3 converter, install it, and when you run it a small window will appear. Just drop your files onto it and it will convert it to MP3 and stores in the same directory with the same file name.