Click the Firefox button, go to Add-ons, Extensions and remove this:

• Jookz Toolbar.
  
  

If it doesn't make any difference, do this

• In the location bar, type about:config and hit Enter.
  
  
• In the filter at the top, type: keyword.URL
  
  
• Double click it and remove whatever's in there and replace it with http://www.bing.com/search?q=
  

The URL to add in "keyword.URL" becomes a link in this post, so right click it and choose "Copy Link Location" to copy it to the Windows clipboard. Then hit CTRL+V to paste it. Saves you having to type the whole thing.

To reset your home page, do the following.

• Go to the site you want to set as your homepage.
  
  
• Click the orange Firefox button and go to Options | Options | General .
  
  
• Make sure it says "Show My Homepage" in the first dropdown menu.
  
  
• Click the button called "Use Current Pages" to set the homepage to the one you have on the screen.
  

N.B. to prevent the problem recurring, watch what you do when you install a 'free' program. Most of this junk comes bundled with other apps.

I have tried everything, including searching the files in my computer, and I can't find it to delete it. I tried changing everything to bing, and it takes over. It's not even listed in my extensions. and my firefox keeps crashing, I don't think this new version is good.

Open about:config again and then in the filter at the top, type: mp3tube

For every setting where you see that name, right click it and choose Reset to reset it to Firefox defaults.

Then close Firefox and restart it again.

okay I did the first step again, so far so good. I just hope it doesn't take over again. thanks for your help. I also already set all the items under mp3tube, so maybe that combined worked. Supposedly it is yahoo, but I don't know what in the computer is linked to yahoo, allowing it to do that. Searched all my programs, and no yahoo. Hope this lasts. Thanks again. :)

You're welcome.

Could you please click the "Solved It" button next to the post which solved the problem for you? This will help others searching for a solution to the same question.

You can always post to this thread if things turn pear-shaped again.

Thanks.

I went to search something today and it happened again. Stubborn, that's for sure. Your suggestion did work, but something else in the computer is allowing this mp3tube toolbar to take back over. Very aggravating. Going to try contacting them directly. thank you.

It appears that you can remove it with Malwarebytes. So download the free version from here and then run a full system scan: http://www.malwarebytes.org/products/malwarebytes_free

Just wanted to add that I have downloaded scanners, etc. Nothing pops up with this mp3tubetoolbar. I searched my local drive and it showed up in my music, I deleted all filed associated. I have changed the keyword.url, I have checked all settings.

the closest I have come to fixing it is while it's running. Once I close firefox and reopen, it takes over again. How is this possible? Something is changing the keyword.url. I have even tried restarting in safe mode, where all extensions are disabled, to see if that would help. Nope.

btw.. it is not affecting my search bar, only the address bar. I have set my search bar to bing and it remains bing. That was changed somehow, but I switched it back to bing and it remains bing. I switch the address bar to bing search, and as I said as soon as I close and reopen, it switches back. How is this possible, what is this redirection connected to? How in the world do I get rid of it for good ?!!

I know this happens time to time, you download a program, etc and suddenly your stuff is all changed, but I always manage to change it back, once I get rid of the program, only I don't know where it's coming from? I have tried to find out information, no luck. Even the dang page says @ the bottom, "how to remove," as a link, then it pops up with the "keyword.url." That's nice, but it doesn't mention how the damn thing keeps taking back over. I'm not going to have to change a setting every time I start firefox. btw. already updated firefox, no prevail. HELP !!

tried all these suggestions and none worked. Finally, I simply uninstalled Firefox using Revo Uninstaller. When the Firefox uninstaller opened I checked the box for "remove personal settings." (You lose your bookmarks and saved passwords). I then downloaded firefox and re-installed it and no mp3tubetoolbar!

HOW TO REMOVE THE MP3TOOLBAR FROM ITS ROOTS ?

              CLOSE ALL YOUR BROWSER.
              OPEN  THE MYCOMPUTER AND SEARCH  MP3TUBETOOLBAR.(WHATEVER THE NAME)
              SELECT ALL THE FILES AND SHIFT + DELETE. IF IT DOESN’T DELETE FINE. MOVE TO NEXT STEP .
              GO  TO  C:\Program Files\MP3TOOLBAR (KIND OF NAME.I DON’T REMEMEBR EXACTS)
               There You will have 3-4  files and one ” uninstall.
Run As Administrator “Uninstall”(Funny,A virus doesn’t uninstall itself,but go through it)
             Then  Select  All remaining Files and Press  Shift+ Delete .
             The Windows would say 

“ cant delete Because its open in such and such program”

                                              Or    

“cant delete Because its open in such and such service “

If it’s a program - Remember the so so name of the program

Press alt+ctrl+del and click task manager . In the Task Manger , click the process tab . Now find that “mp3…” program in the list. Select. Right Click on it and Select Kill Process Tree .

Go Back to that c:/program files/ mp3…. And again select all .Press Shift + Delete

Most Probably Now it’s a Service that wont delete. So Click the round“Windows” circle on the left down corner. In “ Search Programs and Files” write” services”.

At The Top under “control panel” click “ View Local Services”
                    A  window would open with heading “services” With lots of wheels
                     Now  Search for Name “ mp3….”  Select. Right click.   Click stop service.
                    Don’t close the window. Again right click the it and click properties.
                   copy the service name : “ mp3… “.
                   Good close the window .
                      Again  go to the Windows Circle on Desktop and  write” cmd”(but don’t click enter)
                      
                  On Top “cmd “. With icon would appear.Right click  “Run As Administrator”
                      Cmd Black Window opens .
                      Write   Exact(plz note the string comma”)   ->    sc  delete    “       
                         Right click. Click Paste.
                       sc delete   “mp3 …….”          (close it with the string comma”)           
                            press enter.
                         Delete Successful .   
                    
                        Now back to shift+ delete that  c:/program file/mp3..  folder.
                     Clap. Clap. You are out of the clap trap.

Again its sc delete " mp3...service name"

I have been fighting the mp3tube thing for over a week. This first step absolutely worked! Thank you.