Maybe the line in and line out are combined? Seems strange. You can always use a USB output for sound. As mentioned a good audio interface will be most suitable if the budget stretches. I use the the UA-2 by Zoom as it's USB 3. There are others by Zoom. Personally I love Zoom products but a lot of people on the site like Focusrite, and there are loads of others. Even some of these fancy mixers..... if live is going to be your thing. :-)


Windows 10 Home 20H2 Build 19042.487
BIAB 2021 (Build 818)
Intel(R) Core(TM), i3-4160, CPU @3.60 GHz RAM 16 GB, 64 Bit X64-based processor
Zoom UAC-2 (USB 3 interface-built in midi)
VoiceLive 3 Extreme, Sputnik Valve Condenser Mic