Fixed some errors / problems reported by Landscape

[Hexcles]

• Fixed volume setting
• Use lazy logging
• Some other minor problems

[landscape-bot]

Repository health increased by 5% when pulling 9c9cd2d on Hexcles:player-refactor into 063eac6 on taizilongxu:master.

• No new problems were introduced.
• 9 problems were fixed (including 2 errors and 7 code smells).