Hiya Koe, Atomizer hasn't been released yet. Access stated Q2 2008.
As it currently stands, the effect will only be used on the audio-inputs of the TI.
So anything with a signal that is "line-level" will work (like CD players, synths, etc.). The LoopStation should be fine.
You wont be able to plug microphones into the TI directly. You will need a pre-amp to bring them up to line-level first. I see the LoopStation has a microphone input so you should probably be able to use that, before plugging the LoopStation into the TI.
Regards software, I'm not sure if it's 100% self contained within the TI, or whether the software is needed alongside the TI. We'll have to confirm this.
Welcome to the forum.
(I deleted your other thread as it was a duplicate).
Timo