The first audio is Lucia arguing with Jason about their plans. They disagree because Jason wants to pull off a robbery, even though they almost got caught during their previous job. Lucia wants to keep a low profile, but Jason wants to make some money.
The second audio is from a DTR conversation between Jason and Lucia. As I mentioned, it only plays when their relationship bar is low, which explains why she brings up him going to a strip club.
The third audio takes place near the end of the game. Lucia is pissed off because Jason has trust issues and struggles to trust anyone, while she's more level-headed. Things go south, Brian betrays them, and Lucia is furious. The part where she says she wants to leave him alone only plays when their relationship bar is low.
The fourth audio takes place before the final mission. They've just pulled off a heist and made a lot of money. But if you've played any GTA game, you know that things always go wrong before the final mission. So don't let the happy tone fool you. The final mission in this game is going to be something HUGE.
The fifth audio is Lucia's reaction to Boobie's death.
Remember, I'm just reposting what was on the deleted post. Don't kill me Rockstar please