Audio drops when streaming mpeg files

I've got a strange problem when streaming mpeg files. I use BeyondTV on a PC to records TV shows and then move them to my Lacie NAS.

When I try to stream the video from the Lacie to my Macbook, the video plays OK, but the audio drops out every few seconds. I have tried using Quicktime as well as VLC and the problem is the same. I do have the Quicktime MPEG component.

If I copy the entire file to the Mac's hard drive it plays fine.

I'm using a 802.11g network. I don't think it is the network speed because if I if I boot the Macbook in Windows with boot camp, the same file plays just fine using VLC for windows.

Any ideas? Thanks.

rv