imported samples do not play back


im new to Cubase and learning a lot very quickly although for some reason cannot get any imported audio loops to play back in Cubase

this surely must be something small i am over looking just cannot seem to get it

any help would be appreciated thanks

Cubase 6.0.5

Busses not set up correctly…? No soundcard…? No speakers…? Some useful info…?

well everything is still standard as i just got it, mbox is working cool so are the speakers and all my vsts work…its only the wav files and rex files i try to get into cubase load but do not play back