MPD and whatever front end you like for what’s the best music player going, imo. You can tweak your player to your liking, MPD will play any format supported by ffmpeg, has some forks for further functionality, handles big libraries like a champ (I’m sitting at 54,758 files in mine without issue), can serve music streams online and be remotely controlled, and even has ridiculous features like the ability to handle gopher urls for media/streaming.
It’s also as lightweight as you want it to be. MPD+ncmpcpp for playback use a whopping 66MB of ram for me.
No, because I don’t see any point to it. If they manage to catch him, they may as well just kill him on the spot when they get him, as I have no faith that his trial would be anything more than a farce to try and present some sense of following process and norms, while guaranteeing he gets some insane sentence, only to be found mysteriously to have hung himself. I’m sure that, somehow, a jury of his peers will be comprised solely of the 12 most ghoulish residents of NYC one could find, and they’ll probably try to shop around for the worst judge they can to hear the whole thing.