Current behavior:
It has black screen with a Audio System Issue.

We need xbe.txt and krnldebug.txt dumps in order for this to be a complete issue. Thanks in advance :-)
@Voxel9 Oh okay, how do I do that? :-o You're so welcome by the way :D
To dump your XBE info, go to Edit -> Dump Xbe info to -> File..., save your xbe.txt somewhere, then drag, drop and upload here.
Similar for krnldebug.txt, go to View -> Debug Output (Kernel) -> File... then set a location to save it to, then you'll need to run the emulation again to generate it. Drag and drop it here like the xbe.txt afterwards then we're all good :)
Totally, I did like what you said! Your steps worked! :D But Apex didn't. :(
Something I never realized until now is that there's already an issue for this game posted in #156, though this xbe's title is named "Apex", whereas the original issue's xbe's title is in all-caps "APEX", which makes me think that it could be a regional difference.
I'll mark this as a potential duplicate for now, but otherwise it'd be nice to know what specific region this issue is covering; unfortunately since this xbe is patched as "region free" it's not really possible to tell.
Ah, I see. I understand now. That might be why. I saw the Region status saying "Unknown."
Is getting there! It finally has a title screen showing! but, unfortunately the black screen continues to appear when you press start. But Sega GT 2002 is finally in-game along with Sega GT Online!

@SonicThePS4 Please provide a KrnlDebug.txt
How did you get to menus?
Did you used non-WIP branch?
Current on master:

Closing this as a duplicate with a tampered xbe.
Most helpful comment
Is getting there! It finally has a title screen showing! but, unfortunately the black screen continues to appear when you press start. But Sega GT 2002 is finally in-game along with Sega GT Online!