获取windows系统实时播放的音量

[{"title":"（ 8 个子文件 2.25MB ） 获取windows系统实时播放的音量","children":[{"title":"volume.res <span style='color:#111;'> 57.10KB </span>","children":null,"spread":false},{"title":"uMain.pas <span style='color:#111;'> 2.73KB </span>","children":null,"spread":false},{"title":"Win32","children":[{"title":"Debug","children":[{"title":"volume.exe <span style='color:#111;'> 10.70MB </span>","children":null,"spread":false},{"title":"uMain.dcu <span style='color:#111;'> 7.79KB </span>","children":null,"spread":false}],"spread":true}],"spread":true},{"title":"volume.dpr <span style='color:#111;'> 232B </span>","children":null,"spread":false},{"title":"volume.dproj.local <span style='color:#111;'> 930B </span>","children":null,"spread":false},{"title":"volume.dproj <span style='color:#111;'> 29.80KB </span>","children":null,"spread":false},{"title":"uMain.dfm <span style='color:#111;'> 568B </span>","children":null,"spread":false}],"spread":true}]