Volume is low even when it is turned to maximum:
即使調至最大音量之時音量仍然太低:
Double click the speaker icon at the right bottom corner.
輕拍兩下右下角揚聲器圖標.
When the play control windows pop out, adjust volume control of wave to desired level. Make sure the mute check box is not checked.
當播放控制視窗出現, 調整音量至理想水平.  確定沒有撥至 '靜音' 狀態.