Ear Candy Automatically Fades and Raises Volume Levels in Linux

“Free utility Ear Candy makes your sound system smarter. If
you’re listening to music and a Skype call comes in, or you load a
YouTube video, Ear Candy gently lowers your music volume to let the
other sounds through.

“Ear Candy does this for a few different sound “events,”
including sound files, movies, and VoIP calls. It’s basically a
volume manager for PulseAudio, the new (but not necessarily loved)
audio system for many Linux distributions.”

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