I understand that this is the result of a project where all the voice lines were dubbed by Jaka and toca.

My question is: Are there any tools/guides available that help with the voice audio during gameplay?

To be extremely specific:

• Voice lines during FMV = Great
• Voice lines during in-engine cutscenes = Great
• Voice lines during gameplay = Awful (volume deteriorates dramatically the further the camera is from the speaking character model)

I have tinkered with all the audio settings I could think of.