It works great apart from making an obnoxious loud noise whenever a feed updates which is totally unnecessary and there are no options available to disable it

EDIT: Thanks for the response dev, the options are entirely hidden and you can't get to them from just clicking the icon (unlike most add ons I've used), to help anyone else completely lost - right click>manage extension>click the tiny ... button next to the disable slider > and there are options there

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It would be nice to have the same also for newsblur, can you try to set it up?