I listen to yahoo dsl launchcast internet radio and dish network satellite CD music stations, some music cd's, and some satellite TV movies while I work at home and am thinking of upgrading from my Klipsch 2.1 speakers to Klipsch ultra 5.1 surround and getting a new sound card for my pc (maybe the soundblaster audigy eom). I want the best sound quality from these sources without spending more than I need to. Can anyone give me info (in basic laymans terms) about the potential sound quality from these different sources? Using Klipsch 5.1 speakers, will I notice any difference if I pay more than $100 for a new sound card? Also, do I need to upgrade my stock cables for such a system? Thanks from a novice.