Hi all, my first post here: My stuff: I have a Digital Coaxial SPDIF on my ASUS Motherboard in my PC, ran by nVidia nForce2 audio drivers and capable of 5.1 sound. My MoBo does NOT have an optical digital SPDIF (Tosc link). My Coaxial cable is a no-name brand, and it connects my PC to a Yamaha RX-V1500 A/V Receiver/Decoder (a high-quality receiver). My problem: When playing MP3s and the like on my PC thru my receiver, it seems that there is lots of interference. For example, I can change the speed of my ceiling fan or turn the light on or off in my bathroom and have the audio cut out momentarily as I do so. Concerned that it might be the motherboard, I connected my set-top DVD player via the same Coaxial cable and played a CD...sure enough, same electrical changes in the apartment would cut the audio out momentarily. However, when I play a CD in my DVD player thru the Optical Tosc link, no interference whatsoever. I did some other tests w/ high-end monster video cables acting in the place of the audio SPDIF coaxial and they were not suspectible to the same interference. So: Clearly, my SPDIF Coaxial Digital cable sucks. I have 2 choices now, and this is where I ask what is best to do: A) By a high-end Monster Cable THX-certified SPDIF Coaxial cable, which I need about 6' of, so roughly $80 or so. This apparently would fix my problem 100%. B) By a PCI sound card that will give me a Optical SPDIF Tosc link and then buy a 6' fiber cable, costing me probably closer to $200 total. 1) The real question here is: which should I do and why? 2) Is there any added benefit of the optical over the coaxial, particularly when the primary purpose of having my PC connect this way is MP3s which are inherently noisey to some extent? (Of course the optical might be nice for future or less often used features like PC gaming.) 3) Will a high-end SPDIF Coaxial cable still be suseptible to some degree of interference? 4) Finally, Soundblaster, with their damn monopoly, doesn't offer ANY soundcards with the optical connection unless you go to their solutions requiring two PCI slots or one PCI slot and one CD Drive Bay or external solutions that connect thru USB...Soundblaster clearly doesn't know the market, and I wish a new kick-butt competitor would serve my needs. Anyhow...I'd prefer an all-in-one PCI solution for the optical if I go that way...suggestions? Should I just do the external USB SoundBlaster option? Sorry for the long post, but thank you for your comments. The consensus of the responses will determine my course of action. I hope to fix this asap... Thanks!