当我查看以下项目时: http://www.iphone-recorder.com/about.html http://blog.pjsip.org/2009/02/19/native-iphone-sip-client-based-on-pjsip-available-on-app-store-open-source-and-not-tied-to-any-provider/ http://code.google.com/p/siphon/ 看起来似乎可以流式传输音频。我有什么遗漏吗?