YouTube is a popular video social web site with lots of uploaded content, including comedy, news and music. Though YouTube itself does not have a function to upload MP3′s directly onto its web service, you can convert a MP3 into a video so that it is compatible for uploading with their system. Masses around the globe listen MPEG-1 Audio Layer 3 (MP3) files reason being the high compression sizes while retaining most of the original fidelity and solid retention of audio qualities. MP3 files can easily be transferred across the internet since the files are relatively small.

We at WiredCPU have searched all the web-services which provide the functionality of converting YouTube videos into mp3, but the catch is we are listing only those sites which doesn’t ask you to login, provide your email address or by any mean become a member of their sites, no download needed, no software installation, everything online without hassles and in few clicks so here we are with the list -

1. Get Audio From Video – Here you can convert Youtube videos to MP3, MP4, or 3GP format in seconds. Our conversions are 100% online so there is no software to download.

How to convert Youtube to MP3 -
1. Enter a search term in the field and click “Search” to find your video ( Example: “artist” or “song title” )
2. Or if you already know the video you want to convert, enter the URL ( Example: http://www.youtube.com/watch?v=K6cH8cJwXwA)
3. After you find the video, select the format you want to convert to, then click the download button.
4. After the conversion finishes, download and save to your computer and enjoy!

2. Video to MP3 – Video2mp3 is a free video to MP3 Converter and allows you to convert and download a video to MP3 file online. The service is fast, free, and requires no signup. All you need is a Video URL, and they will transfer the video to their server, extract the MP3, and give you a link to download the audio file.

3. Vid to Mp3 – VidToMP3 allows you to download YouTube videos and the audio from non-copyrighted video clips on video sites, they support all your favorites MySpace, Vimeo, Google video along with YouTube and they are soon be offering YouTube to FLV.

4. Listen To YouTube – Enter URL from any YouTube page, and this application will quickly retrieve the Flash video file and extract the audio as a downloadable MP3

Once you click ‘GO’, you will need to wait a minute or two until we convert youtube to mp3.

5. YouTube mp3 – again you do not need to have an account, the only thing you need is a YouTube URL. The service will start to convert the audiotrack of your videofile to mp3 as soon as you have submitted it and you will be able to download it. Is is platform-independent too you can use it with your Mac, a Linux PC or even an iPhone. All the conversions are performed in high quality mode with a bitrate of at least 128 kBit/s.

6. YouTube To Mp3 – say you like a certain music video on YouTube or MySpace, and you want it as a song to listen to on your iPod, computer or stereo, just copy the link for the video, paste it into our tool, and it will automatically convert the video to an mp3 file ready for you to download, listen to, and share with your friends within seconds.

7. Flvto - is great to convert or download Youtube videos to popular formats like iPod, iPhone, Windows DivX, MP3 and other. Also support Veoh, Dailymotion, Myspace, Facebook, Metacafe, Lulu and Vimeo.

8. Convert YouTube To Mp3 – apart from converting Youtube videos to MP3, MP4, FLV, AVI, MOV and WMV format in seconds it can take multiple ULR’s of YouTube at one go.

9. Soundzaa

10. Bender Converter – you will be able to download and convert video from the following websites: youtube.com, dailymotion.com, megavideo.com, vimeo.com, twitvid.com, veoh.com, video.google.com, blip.tv, break.com, kontraband.com, facebook.com, livevideo.com (liveshows not supported), liveleak.com, stagevu.com.

You can download video and audio in MP3, AVI, FLV Flash, iPod / iPhone and other popular formats. The service is fast and doesn’t require you to register.