Hello,

The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information.
Note: This will cause you to lose any Extensions and some Preferences.

• Open websites will not be saved in Firefox versions lower than 25.

To Reset Firefox do the following:

1. Go to Firefox > Help > Troubleshooting Information.
2. Click the "Reset Firefox" button.
3. Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
4. Firefox will open with all factory defaults applied.

Further information can be found in the Refresh Firefox - reset add-ons and settings article.

Did this fix your problems? Please report back to us!

Thank you.

Hi Deba,

Thanks for your help!

I've tried another reset with this new installation of Firefox 29.0, but it did not help :(

The same playlist I linked above behaves as I've noted in the original post.

Many site issues can be caused by corrupt cookies or cache. In order to try to fix these problems, the first step is to clear both cookies and the cache. Note: This will temporarily log you out of all sites you're logged in to. To clear cache and cookies do the following:

1. Go to Firefox > History > Clear recent history or (if no Firefox button is shown) go to Tools > Clear recent history.
2. Under "Time range to clear", select "Everything".
3. Now, click the arrow next to Details to toggle the Details list active.
4. From the details list, check Cache and Cookies and uncheck everything else.
5. Now click the Clear now button.

Further information can be found in the Clear your cache, history and other personal information in Firefox article.

Did this fix your problems? Please report back to us!

Thank you.

Hi Deba,

No, clearing my cookies and cache does not fix the problem.

Cheers!

Hello,

Try Firefox Safe Mode to see if the problem goes away. Firefox Safe Mode is a troubleshooting mode that turns off some settings and disables most add-ons (extensions and themes).

(If you're using an added theme, switch to the Default theme.)

If Firefox is open, you can restart in Firefox Safe Mode from the Help menu by clicking on the Restart with Add-ons Disabled... menu item:


If Firefox is not running, you can start Firefox in Safe Mode as follows:

• On Windows: Hold the Shift key when you open the Firefox desktop or Start menu shortcut.
• On Mac: Hold the option key while starting Firefox.
• On Linux: Quit Firefox, go to your Terminal and run firefox -safe-mode
  (you may need to specify the Firefox installation path e.g. /usr/lib/firefox)

Once you get the pop-up, just select "'Start in Safe Mode"

If the issue is not present in Firefox Safe Mode, your problem is probably caused by an extension, and you need to figure out which one. Please follow the Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems article to find the cause.

To exit Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.

When you figure out what's causing your issues, please let us know. It might help others with the same problem.

Thank you.

Hi Deba,

The problem persists when Firefox has been restarted to Safe-Mode

Thanks very much for your help!

Hi ranroll,

I was thinking that was a user.js issue but apparently it isn't. Looks like all the general troubleshooting steps were tried with no success. :( Don't worry. We'll get this up and running ASAP.

Create a new profile as a test to check if your current profile is causing the problems.

See "Creating a profile":

• https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles
• http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues

If the new profile works then you can transfer some files from an existing profile to the new profile, but be careful not to copy corrupted files.

• http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

Hi Moses,

Thanks for your reply.

I created a new profile as instructed by your links, but the problem persists.

Cheers to all!

You can try to disable the HTML5 media player and use the Flash player instead if there is a problem with some of the mp3 files.

You can test that by toggling these two prefs to false on the about:config page

• media.windows-media-foundation.enabled
• media.directshow.enabled

Cor-el,

This has fixed the problem for me! I am now able to play any song on Soundcloud without issue.

Will I have to keep these preferences turned off in future installations?

I guess I still don't understand why this problem hasn't occured on my laptop, but I assume this will be worked out sometime.

Thank you so much!!

I'm not sure why this would happen with some mp3 files and the HTML5 media player.
You may be missing some codecs to play these specific mp3 formats as there are decoding errors according the the error messages you posted above.

Something MUST be wrong with the Soundcloud site.

When you bootup in SAFE MODE AND you've disabled all your plugins....and you STILL get their popup blockers saying: "It looks like you have a Flash blocker browser setting or extension. Please enable Flash to hear this track."

Yep...something wrong at the Circle K @ SoundCloud.com

Hi kimbakat, SoundCloud seems to display a mix of HTML5-playable tracks and Flash-playable tracks. I don't think you can force the site to use HTML5 players for all tracks; you will need to allow it to run Flash for some of the content.