Please tell me more about what what is "audible clicks" ?

See attached audio waveform images. Problem probably best described as discontinuous audio blocks...

Hi, it is a Beta and you are expected to have issues in betas as well as to submit : a bug report. https://bugzilla.mozilla.org/ Bug Writing Guidelines : https://developer.mozilla.org/en-US/docs/Mozilla/QA/Bug_writing_guidelines

Who knows next update tomorrow may have it fixed.

• https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles
• https://support.mozilla.org/en-US/kb/export-firefox-bookmarks-to-backup-or-transfer

Uninstall / Eject and download a new one.

Please let us know if this solved your issue or if need further assistance.

Problem has been there for at least four updates, hence my posting here...

JabbaLeChat said

Problem has been there for at least four updates, hence my posting here...

Then it would be even better if file a bug report.

Also the suggestion of uninstall and put a new one in.

or : https://support.mozilla.org/en-US/kb/refresh-firefox-reset-add-ons-and-settings Save your bookmarks and profile. If after the refresh it continues in the new profile then for sure it is a bug.