YouTube to Mp3 converter

I'm looking for a youtube to mp3 converter download software. I would like to model it after this software that already exists: [[login to view URL] T][1]hat particular software has a lot of options include with it including: -formats MP3,M4A,AAC,WAV,WMA,OGG,FLAC, and ALAC -multiple download qualitites -auto download from copy button. Software auto pastes the yt url to the sofware and begins the download -ability to pause and stop during download. -ability to download playlists -auto fill for top music playlists on youtube (Music Billboard top 20,Music daily top 100,etc.) -abilty to open folder where downloaded song is located. Also included with it is a large options section including: General: [login to view URL] Advanced: [login to view URL] Output: [login to view URL] Tags: [login to view URL] Finally the software will be tagged with our url to avoid piracy and a like/twitter/google plus icons on the main to have the software plused / liked / tweeted from the GUI. It will be a fairly complex build to add all the components offered, and we can discuss a few options that can be removed / replaced if you feel that the work associated with certain options maybe too much. Along with the build will be a new clean GUI and an installer (inno, etc.). I am flexible you can build it in whatever language you choose, as long as the end result is the same level of quality.