No audio when running Cubase 6

Hello, I’m super new to all of these high end production softwares so please go easy on me haha.

I literally just got Cubase today and I’m having some trouble with issues that I can’t seem to find solutions for. My main issue is that when I run Cubase, I cannot get any outside audio from other programs to play through my speakers, such as YouTube or my POD Farm program. Before I got Cubase I was just using Reaper and I was able to monitor perfectly because I made the Line 6 TonePort DI my default audio device. Doing that allowed me to monitor latency-free and hear the audio from other programs than Reaper, but I can’t seem to do that with Cubase.

So in a nutshell, I guess I need to figure out how to get Cubase to allow outside audio into my speakers. I’m still running my speakers through my Line 6 TonePort DI and it is still set as my default audio device.

Yeah, see, I told you I was stupid