How to Convert a Flash Video Into an MP3 File
- 1). Use Convertfiles.com for one option for converting FLV to MP3. If the video is streaming from a website, then select the option to download from a URL on the conversion site. Paste the website address where the video is playing into the textbox on the conversion site,s elect MP3 as the output format, and click convert. If the flash video is something saved to your computer, then you can also use this site to upload the file , convert it, and download an MP3 version.
- 2). Try Zamzar.com for an alternate website option. This site can also download FLV videos in MP3 format either from streaming sites, or by uploading an FLV file you already have on your computer. Click "Convert" after you've uploaded the file and selected "MP3" as the output format, and entered an email address, and a link to that file will be sent to that address.
- 3). Download and install "YouTube Downloader" if the FLV file you want is streaming off of YouTube. Copy the address of the YouTube video and it will be automatically pasted into the open YouTube Downloader program. You can then download the FLV file with one click, and convert it to MP3 with another.
Source...