Asking for advise.

I have X-Fi XtremeGamer Fatal1ty Pro hooked up to a normal 2.1 speaker now. My audiophile friend keeps telling me I'm not doing the sound card justice. Am I better off hooking up this SC to hifi speakers or get some good PC speakers?

*I don't know the specs of the hifi speakers yet (hand-me-downs) nor done PC speakers shopping yet.