IA64: The WMSDK does not support ia64, so the shmedia.dll functionality has been disabled for ia64. The binary still compiles, but the call to WMCreateReader is not made. Fake stub lib: Currently, wmstub.lib is in a protected directory (shell\oem\binary_release\musicprp\lib). If this directory does not exist, we fake up the one api we use from there (WMCreateReader) in fakestublib.cpp. To build a propertly working shmedia.dll, the builder needs access to this directory.