I don't think you can remove just the ads unless you would use an audio editor. When it asks what file you want to convert, browse by clicking on the folder just to the right of where it says "Select the video file". I like using the youtubedownloader to convert, because I can download all the videos and convert later at my leisure. For the most part, I do use the Firefox add-on to download. Just easier when you are on the youtube page to click "download". HTH, Jean

So have you tried using Internet Explorer to download? If that fails and you are using the Microsoft firewall click Start, click Control panel, click Security settings, click Firewall in the lower part of that window then look through the tabs to see if you are being denied access there. You mention using an anti virus and firewall, aren't you using any other kind of protection to keep bigger nasties at bay? Something like either Superantispyware or Malwarebytes should be installed, updated and ran with a full scan initially to be safe. Then update and run every 14 to 21 days at your own discretion.

Why waste your time with Firefox? Firefox isn't designed to listen to music. You should use vlc instead http://videolan.org/ -- It can play flash files found on youtube !and! disable video -- so you only hear the sound. vlc will also be able to cycle through your playlist -- all you have to do is add each flv file once. That's the hard part. You'll have to use some service to get the link to the actual flv file. I use the "Download Video" Greasemonkey Script: http://userscripts.org/scripts/show/4037 Now to add a video to VLC's playlist. View >> Playlist >> Manage >> Add URL >> paste the url from Download Video in the the first box. Now to disable Video. Settings >> Prefrences >> Video >> check the Advanced Options box >> uncheck Enable Video >> click Save Just press play and your videos (music) should start playing automatically. You will probably want to enable Shuffle & Repeat through the Playlist.

This is the program that I use. You can download videos from different sites, plus, you can convert videos to MP3s. Jean Here is a link that might be useful: Youtube downloader