So I just wrote an atrac3+ frame decode library (2013-06-03)

[ryuukazenomai]

Change Log : v0.1.2
- Fixed some bugs that may cause crash
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Here's the project and source codes:
http://sourceforge.net/projects/maiat3plusdec/

The project contains a frame decode library and a MiniPlayer(win and android) which can play at3,oma files with atrac3+ stream.

The library can decode atrac3+ mono and stereo and maybe 6ch at3 files(ps3 use it.)

So we don't need sonicstage and other closed source at3+ decode libs now!

hope it's useful!