[Help] I Got a new Monitor

[Mara]

I got a Monitor i use for Xbox now.
Monitor: Samsung 24" SyncMaster S24B300
Video of it: http://youtu.be/PD0lFFfdBiU
Since its a monitor, there is no audio.
Is there anyway i can get audio?
I just ordered Astro's and don't if that will work but how can i hear gameplay through this monitor?

 

[Guest]

http://www.youtube.com/watch?v=v0HiNZzRkIo&list=FLXb99Nof8ry27OcxZtLSkMQ&index=7&feature=plpp_video

 

[Mara]

I set up but there is no audio.