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Changing Facebook Messenger incoming message sound


Mar 15, 2013
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Does anyone know if it's possible to change the default FB Messenger sound for incoming messages (which has become quite loud some time during the last half year or so)? I searched for .m4a files within Messenger app's folder, but none of those I found sounded like the one I'm looking for. Could it be hardcoded in the app itself, thus non-changeable?

I was, on the other hand, able to switch the message sound for Skype app (into something more pleasant).
I've actually never heard the notification sound of the Facebook Messenger app before since I turn off all sounds and such, but I believe it's the .wav file in the /Messenger.app/ directory. Not sure if it differs from device to device, but it should be "3.wav", the little ping sound.
Yep, that's the one, thanks (I was only looking for m4a files). I changed it with another wav of the same format, we'll see if it works.

EDIT: Nope, no sound can be heard now. I used the same format and checked the permissions of the file to be OK. Strange.
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You may have to edit the plist to call the new wav file. Make sure it's a .wav and named identically and all.
What would I have to change in the plist file? I mean, I used exactly the same name for the new file (3.wav), as well as used the same format (I think it was 16-bit mono).