传说中的FMS2.0是采用AS2.0的吧. 而当今的FMS3.0大概会采用AS3.0. 预览一下 Flash Media Server 3 吧:
FMS 3 详情: http://www.adobe.com/aboutadobe/pressroom/pressreleases/200709/090607FMS.html
FMS 3 FAQ: http://www.adobe.com/aboutadobe/pressroom/pressmaterials/fms3/faq/