Thanks for the replies. Yeah, I didn't really like the look of JavaFX, though I do like Swing. Swing seems to do what it does very elegantly and robustly. Which isn't gaming, but ah well. (I did find that out by about my second learning-experience game, when I realized I would have to code everything more directly myself.)
I have nothing against ogg. I naively thought mp3 would be more widely supported. I probably will end up using Ogg if I don't go with the JavaFX media. I downloaded Paul Lamb's sound library yesterday. I'll try to figure it out later.
I'm going to do another newbie project first, then tackle LWJGL and 3D. If I ever do. 3D makes me dizzy.