I just found the thread where he recommended it to you. IMO it was not a good recommendation, as like I said the board is designed with features in mind for a server, and I apologize to you for the bad recommendation and hope you still trust us.
At this point since you have bought it, you may as well use it so you don't lose money in the process, and it can still work for you. You should just buy a sound card like:
http://smile.amazon.com/Creative-Blaster-Audigy-Performance-Headphone/dp/B00EO6X4XG/ref=sr_1_4?ie=UTF8&qid=1458748185&sr=8-4&keywords=sound+blaster
You don't need anything fancy, this should do the job for you.
EDIT: If somehow you can return it without losing money then I can come up with a better board for you with onboard sound.