5b916d7a_d_DIVX_supported___WMPoweruser__Supported_Scenarios
[Decoder Support] AAC-LC (Low Complexity) This codec is unsupported in WindowsÂ® Phone Emulator. [Container] 3GP, 3G2, MP4, M4A [Possible Audio Combinations] N/A [Max Capabilities] Up to 320 Kbps Constant or variable bit rate Up to 48 kHz 1 or 2 channels [Supported Scenarios] 
Receiving files as attachments in email and MMS messages (MMS does not support M4A) Syncing content from the Zune client to the device MediaLibrary (3GP and 3G2 are unsupported) Enumerating media from the MediaLibrary using the XNA Framework Playing or streaming media with the MediaElement API Playing media in the device Media Player Streaming media in Internet Explorer Mobile Videos captured using the device camera (as an MP4 file) will have their audio stream encoded as this codec type
Updates codec support list for Windows Phone 7 released, XVID and DIVX supported - WMPoweruser
Supported Scenarios