Slight problem playing back 1080p

[SJcaped]

Katherine Jenkins - Everything I Do (Panasonic) HD-1080i 36Mbps.m2ts
Format : BDAV
Format/Info : Blu-ray Video
File size : 1.21 GiB
Duration : 4mn 26s
Overall bit rate : 39.0 Mbps
Maximum Overall bit rate : 48.0 Mbps

Video
ID : 4113 (0x1011)
Menu ID : 1 (0x1)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 2 frames
Duration : 4mn 25s
Bit rate : 35.9 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 29.970 fps
Resolution : 8 bits
Colorimetry : 4:2:0
Scan type : Interlaced
Scan order : Top Field First
Bits/(Pixel*Frame) : 0.578
Stream size : 1.11 GiB (92%)

Audio
ID : 4352 (0x1100)
Menu ID : 1 (0x1)
Format : DTS
Format/Info : Digital Theater Systems
Duration : 4mn 25s
Bit rate mode : Constant
Bit rate : 1 510 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Surround: L R, LFE
Sampling rate : 48.0 KHz
Resolution : 16 bits
Stream size : 47.7 MiB (4%)

Text
ID : 4608 (0x1200)
Menu ID : 1 (0x1)
Format : PGS

Using my PC and ATI 4850, I'm having problems getting this file to work correctly, atm, W7 WMPlayer produces a stable picture but no sound, and VLC produces pic and sound but it skips.

Do I need a particular codec to get this to work?