MCE Volume Increases on fast forward

Strange question. I'm using Windows MCE 7 and when I fast foward anything (Live TV, DVD, Ripped DVD) in MCE, the volume increases. This happens during the first speed of fast forward when it is still playing audio, but if I increase the speed, the sound goes out completely, as expected. Has anyone encountered this? I'm using SPDIF for audio.

Ahh..This makes sense now. Similar to when I used to have Comcast Digital Cable and the non-HD channels were louder than HD. Is there any way to disable sound on that speed of fast forward? I know I could press mute every time I want to fast forward, but that would get old, and I really have no use for sound during fast forward. Disabling sound on fast forward would go a long way to making the HTPC more wife-friendly.