WMC Audio garbled when playing back recorded tv show

[Fred Fred]

When I play back some recorded TV shows the audio is garbled on some
recordings and not others.
I can view those channels and they sound fine. But the recorded shows from
those channels are garbled.
I have Time Warner cable and a strong signal going to the TV card.
My audio card is fine on all other media so I do not think its that. These
files sound bad on other pc's.
I'm at a loss, can anyone help?

Win 7 pro 64 bit all updates.
Hauppauge WinTV HVR-1600 NTSC/ATSC/QAM combo TV card

Motherboard:
CPU Type Dual Core Intel Core
2 Extreme X6800, 2933 MHz (11 x 267)
Motherboard Name Intel Bad Axe
D975XBX (2 PCI, 3 PCI-E x16, 4 DDR2 DIMM, Audio, Gigabit LAN)
Motherboard Chipset Intel Glenwood-DG
i975X
System Memory 4096 MB (DDR2-667
DDR2 SDRAM)
DIMM1: Corsair XMS2 CM2X1024-5400C4 1 GB DDR2-667 DDR2
SDRAM (5-5-5-15 @ 333 MHz) (4-4-4-12 @ 266 MHz)
DIMM2: Corsair XMS2 CM2X1024-5400C4 1 GB DDR2-667 DDR2
SDRAM (5-5-5-15 @ 333 MHz) (4-4-4-12 @ 266 MHz)
DIMM3: Corsair XMS2 CM2X1024-5400C4 1 GB DDR2-667 DDR2
SDRAM (5-5-5-15 @ 333 MHz) (4-4-4-12 @ 266 MHz)
DIMM4: Corsair XMS2 CM2X1024-5400C4 1 GB DDR2-667 DDR2
SDRAM (5-5-5-15 @ 333 MHz) (4-4-4-12 @ 266 MHz)
BIOS Type Intel (09/02/07)

Display:
Video Adapter NVIDIA GeForce 8800
GT (512 MB)
Video Adapter NVIDIA GeForce 8800
GT (512 MB)
3D Accelerator nVIDIA GeForce 8800
GT
Monitor HP w2207 [22" LCD]
(CND8023851)

Multimedia:
Audio Adapter Speakers (Z Cinéma
with TruSurr

Thanks - Fred