recommend me a cheap and decent speak for 360...

im using a computer monitor for my xbox 360, and im also using the speaker that is built in the speaker. the sound quality is really bad and i decided to buy a speaker. i bought the following speaker from logitech http://www.newegg.com/Product/Product.aspx?Item=N82E16836121014 and i realized you couldn't connect to a 360. i thought there would be a audio input jack in the speaker, so i could plug in the 360 audio output plug in it, but there wasn't. then, can anyone recommend a good and cheap speaker that i could actually connect to my 360? and does anyone know how to connect my speaker to my 360? i doubt that's possible though. any help would be appreciated, thank you!

if you wanted to use the same speaker system still, go to a Radio Shack and ask them for an RCA female Y-cable to 1/8th" stereo Input. That will allow you to go from the Red/White audio connections into a standard audio jack. Shouldn't cost you more than 10 dollars, plus its better than sending back your speaker and paying more for a different kind.Shermans_HUD

i already have an adapter that adapts the white and red connections into a standard audio jack, but the problem is that im not able to plug that audio jack in the the speaker. =/