Flash PLayer Audio Quality Issue

Howdy,

I am having a strange issue where I am hearing quality issues in the playback of sound on any flash content (youtube etc ..). The background music or backing tracks all play fine, but the Vocals / Voices in the video are quiet and distorted.  The best way to explain it is, that I can hear the music on a music video ... but the words that the artist is singing aren't there.

Strange ....

I am running Windows 7 64-bit prof. on a brand new machine.

i7 X980X

12 gig memory

Realtex onboard sound from an EVGA X58 motherboard.

I have tried clearing and re-installing the installs, codec packs ... etc ... additionally this problem is present any time I play flash content in any browser or with a stand alone flash player.

Also, my sound works fine in games and local audio. And it passes all the surround sound tests, so I am sure the cables are hooked up appropriately.

Any thoughts ?

Thx !