2. 用ffmpeg录制，virtual-audio-capturer和mic混音录制本地声音 git-svn-id: https://dev.3mang.com:543/svn/liveAssistant@40 ac0e06cd-bbdd-2244-bc7c-814b9d430a94
regsvr32 /u /s %~dp0\audio_sniffer.dll
