the sound is very soft

[Ereb_Zx]

I have a similar issue on WebOS sine 10.9 update. Sound becomes very soft and quiet, compared to playing the same file from the usb port using built in player. Happened with different files, direct playing or remuxing without transcoding. What has helped me was uninstalling the client and downloading it again from LG Store, but the issue returned a week later. Maybe try reinstalling the Android client as well see if that helps.