.j2a - Everything's already ripped: No. The sound effects are in there, actually. Plus some other not-too-important stuff.. I'll get around to ripping the sounds sooner or later. I need to write a program to convert JJ2's sample format to something like wav or a module.. right now I just play the raw data in a sound player I wrote...

.j2d - There's very little useful stuff:
ogLogo.ColorLUT
Menu.ColorLUT
Shield.Plasma
SoundFXList.Ending
SoundFXList.Intro
SoundFXList.P2
SoundFXList.Logo
Menu.Texture.128x128
Menu.Texture.32x32
Menu.Texture.16x16
Tiles.Order
Tiles.Offset
Credits.Palette
Order.ShadeLUT
Order.Palette
Order.Newspaper
Order.Colors
ogLogo.Balls
Balls.Dump
Picture.OrderTexture128x128
Picture.Continue
Picture.CreditsEaster
Picture.Credits
Picture.Loading
Picture.Thanks
Picture.EasterTit
Picture.Title-XMas
Picture.Title
ogLogo.Palette
Std.Palette
Menu.Palette

These programs aren't going to be merged into one, and it's likely they won't be widely released anyway. (e.g. the j2e problem with JJ2 is why that isn't widely released)