Window 7 的听歌和stereo mix的大概setting

用惯了window xp，window 7难搞，隐藏及复杂，终于昨天+今天有时间搞到了大概：

screen的右下角的speaker button按mouse的右键，然后选volume control options > 沟all devices currently playing sound.

再按screen的右下角的speaker button按mouse的右键，然后选sound >
1）playback > speakers > properties > enhancement > 沟disable all sound effects

2）recording > stereo mix(如果没有看见stereo mix，在空白的地方，按mouse的右键，选show disable devices和show disconnected devices)

3）microphone按properties > level > microphone boost自己试着调，enhancement > 沟disable all sound effects