
welcome to mixvibes fourm, sound card issues have been adressed in other postings,need a little more info,on how you have it configured.postings on asio4all in the tuturioal section might be of intrest also.

main question is in the preference tab ,in the audio section is Cross software reconizing the usb sc, and how is it configured,diagrams in previous posting will give you some help in how it should look/be set up,

we are here to help,slow process but posting from prior problems/experencies should help you solve this untill we get more info,and reply

re reading the posting seems to point to problems with config for shure, the output from your comp is the main out, the sound from your usb sc should be used as headphones,

you might have them backwards,,check you audio config table ,
