I have M2TS files that play fine with Media Player Classic or ArcSoft's TMT but have no audio when played in either Windows Media Player or Windows Media Center. I need them to play in Media Center as these files are on a Windows 7 PC used as HTPC. These M2TS files have PCM audio. The audio in the M2TS files according to MediaInfo:

Audio

ID : 4352 (0x1100) Menu ID : 1 (0x1) Format : PCM Format settings, Endianness : Big Format settings, Sign : Signed Muxing mode : Blu-ray Codec ID : 128 Duration : 11mn 20s Bit rate mode : Constant Bit rate : 1 536 Kbps Channel(s) : 2 channels Channel positions : Front: L R Sampling rate : 48.0 KHz Bit depth : 16 bits Stream size : 125 MiB (6%)

I also have different M2TS files taken straight out of a Sony HD camcorder that play fine in Windows Media Player and Windows Media Center. These files have AC-3 audio as per MediaInfo:

Audio

ID : 4352 (0x1100) Menu ID : 1 (0x1) Format : AC-3 Format/Info : Audio Coding 3 Mode extension : CM (complete main) Codec ID : 129 Duration : 16mn 21s Bit rate mode : Constant Bit rate : 448 Kbps Channel(s) : 6 channels Channel positions : Front: L C R, Side: L R, LFE Sampling rate : 48.0 KHz Bit depth : 16 bits Compression mode : Lossy Delay relative to video : -835ms Stream size : 52.4 MiB (3%)

I did not have this problem at all with Vista Media Center. It started maifesting itself with Windows 7. I can also replicate the problem on any W7 PC.

Any help would be greatly appreciated on how to get the audio to play in Windows Media Player 7.