ＷindowsＭedia开发包（ＷＭＳＤＫ），开发ＷindowsＭedia应用程序的二次开发包，支持ＡＳＦ文件的生成编辑以及播放-WindowsMedia Development Kit (WMSDK), the development of secondary WindowsMedia application development kit, support ASF file and the player generated Edit