How to quickly and freely download (and convert) music and videos using Firefox

With a little help from Firefox's DownloadHelper add on, you can dowload any song thats played on website or any video on youtube.  

Step 1: Things

you will need

1. Firefox
2. Downloadhelper , which can be found at www.downloadhelper.net

3. the website at which your song/video is located. 

Comments

[BobS]

I tried the plugin, chose 'download and convert' (.flv to avi (mpeg4+ mpeg3). But the file still shows up as .flv, and cannot be played back. Any idea what's going on?

[atombomb1945]

I read this last night, downloaded the plug in, and it worked just fine.  The last downloader I used was for youtube only and it had to be updated every few months or it would shut down.  I love how easy this one is.

[Vailhem]

 Thank you so much!  Used this thing for over a year, worked perfectly... then windows crashed (surprise surprise) and forgot what it was called... have tried about a dozen others and nothing works as well as this.  Life saver