xaml的发音为：zammel（英语音标），依据有二：
依据一：下面一段话来自于国外英语教材《WPF Programmer's Reference》第xxvii页（PDF电子文稿的第29页）
Many of these new concepts are uniied, elegant, and simple. Ideas such as declaratively building an interface in Extensible Markup Language (XAML — pronounced zammel), property value inheri-tance, and allowing controls to contain any type of content make a simple yet powerful program-ming paradigm.
该书的详细情况见：http://book.360buy.com/19002191.html
依据二：刘铁锰《深入浅出WPF》博客视频的第35秒
博客视频的地址：http://www.cnblogs.com/prism/archive/2010/07/22/1782661.html
该书的详细情况见：http://book.360buy.com/10307542.html
另：XBAP的发音
If you want to attach program code to your WPF user interfaces, or if you want to build compiled WPF applications or XAML Browser Applications (XBAP — pronounced ex-bap), you’ll need a programming environment that can write that code. The easiest solution is to install Visual Studio and write application code in C# or Visual Basic.
《WPF programmers's Reference》第xxxiii页（PDF文稿第35页）