I just custom ordered my first gaming PC. My motherboard is a GigaByte GA-X58A-UD3R (it has 7.1 Dolby audio)
This is really a two part question:
First: one of the games I ordered lists Sound device, EAX, and DYNAMIC MUSIC in the audio options. what do these options mean and which one would I choose to support a 7.1 headset/ 5.1 surround sound system?
Second: I am looking to buy the logitech Z-5500 5.1 audio system. What cables do I need for this to plug into my mother board?
1: EAX is an old audio spec that allowed for extra environmental effects when paired with an EAX capable soundcard. Its more or less a dead spec at this point. EAX 1-2 are supported by most chipset vendors, and 3-5 are supported only officially by Creative soundcards using the X-fi chipset. If you have the necessary hardware/software support, then go with EAX, but its not a dealbreaker.
2: For the Z-5500, you have two options: Analog or Digital. Analog typically offers higher quality, so you would plug the color coded analog audio outputs from the motherboard to the Z-5500 (There should be 3 outputs, Green and two other colors I can't recall right now ). Digital is only one wire and offers the advantage of passing through all Dolby/DTS audio tracks to the Z-5500 to decode (which lessens the workload on the PC when those types of audio tracks need to be played back), but offers slightly less audio quality.