iVolumeSystem Requirements Mac: macOS 10.9 or later Music App or iTunes 7 or later System Requirements PC: Windows 10, 8, 7, Vista or XP iTunes 7 or later Tired of constantly adjusting your music's volume? iVolume ensures that all your songs play at the same volume level. iVolume calculates the volume perceived by the human ear for each song of your Apple Music (formerly known as iTunes) music collection
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iTunesをもっと便利に使いたい | DesignWalker
