Yes, it is mp3. I added a track to the attachment with which I find this crackle to be pronounced the most although it is present in every track.
** Attachment added: "03 A Drop In The Ocean.mp3" https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1555873/+attachment/4595581/+files/03%20A%20Drop%20In%20The%20Ocean.mp3 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/1555873 Title: Sound crackles when using time slider Status in Ubuntu Music App: Invalid Status in media-hub package in Ubuntu: New Status in pulseaudio package in Ubuntu: New Bug description: Sound crackles on handle release when using time slider to fast forward or fast backward the track. Device: mako To manage notifications about this bug go to: https://bugs.launchpad.net/music-app/+bug/1555873/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp