Compressor audio sync issues with .wmv outputs

Hello, all.

I'm having audio sync issues with Compressor...well, maybe Flip4Mac or QuickTime...or both. When I make a .wmv output via Compressor, the audio of the resulting output is 5-8 frames out of sync, slipped in front of the video. This just started happening out of the blue.

This problem occurs whether I output directly from FCP or from an exported "QuickTime Movie" using the DC NTSC 48 kHz setting.

I recently updated QuickTime around the same time this started happening.

I know this problem is relatively wide-spread after doing some research, but so far, no one really knows what is happening.

My only fix is to slide the audio appropriately before sending the sequence for encoding.

Any advice would be greatly appreciated!

Thanks, everyone!
Andy C.

Flip4Mac Studio Pro HD 2.2.0.49
QuickTime Pro 7.5.5
Compressor 3.0.4
Final Cut Pro 6.0.4
iMac G5 3.06 GHz Intel Core 2 Duo
4 GB 800 MHz DDR2 SDRAM