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mp3 audio and .mov audio plays in a lower pitch than normal.

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  • 24 have this problem
  • 22 views
  • Last reply by p914

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At random, some websites mp3 audio or .mov audio will play at a lower pitch than normal in Firefox.

At random, some websites mp3 audio or .mov audio will play at a lower pitch than normal in Firefox.

Chosen solution

Did you check the settings in the QuickTime player?

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All Replies (6)

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Firefox 11. Although the same problem happened in earlier versions.

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That sound like a problem with the player or plugin that is used to play the MP3 files.

Is the QuickTime plugin used to play MP3 files?


There are other things that need your attention.

Your plugins list shows that you have the Mozilla ActiveX plugin installed.

  • Mozilla ActiveX control and plugin module

The Mozilla ActiveX plugin is not compatible with Firefox 2 versions and later and you should remove it.

For instructions on how to remove the Mozilla ActiveX plugin see:

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Hi Cor-el Thanks. Yes, I use Quicktime plugin for mp3. I'll do the Mozilla Active X removal.

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Chosen Solution

Did you check the settings in the QuickTime player?

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I removed the mozilla ActiveX. Which settings? Player Preferrences or Quicktime Preferrences would need to be changed?

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Hi Cor-el, I had to reset my playback sample settings to 44.1 instead of 48k to get stuff to play correctly in Quicktime. They play right now. I appreciate your help!