I’m joining the jam, but I will still make everything myself and from scratch.
I will program in java (because I’m lazy), using no libraries except for audio (I will probably use JavaZOOM or JLayer).
For music and sound I will use: Cubase 7.5, Various EWQL libraries, BFXR or SFXR (maybe), Audacity, Toontrack software, and a BUNCH of free VST’s.
For art, textures, and other visuals I will mainly use Paint.NET.
The level editor I will use (if needed) is Tiled.
I will focus a lot on music, and I hope I’ll be able to make something playable. So good luck to all of you!