Found out SampleTank 2 is able to have multiple outputs but I’m not sure how one would go about setting up multiple outputs in a newer 64 bit version of Ableton or FL Studio, etc. and if it can receive notes from other midi channels? Want to try it in Ableton because it seems intuitive for multiple outputs and midi inputs but I’m not sure if Ableton lets you have multiple VST2 folders or supports x86 plugins.

if Ableton won’t work, how can I get multiple outs in Bitwig/FL?

 

What you’re seeing is basically a legacy workflow. Modern DAWs and SampleTank v4 already handle multi outs and MIDI routing more cleanly and with more flexiblty. There’s no real advantage in going back to v2 for that. For you, this is not even "nostalgia" of an old workflow, or trying to get old projects to load as they were originally.

Unless you have some Sampletank content you can't live without...

 

If your DAW's are all 64bit that can limit things a bit since many (though not all. reaper I believe can still use them) x64 DAW's have abandoned the 32bit plugin tech altogether.
There's a couple of options for getting x86 plugins to work;
- jBridge - will wrap the original 32bit plug in a 64bit wrapper so your x64 DAW will accept and use it as a x64 plugin.
- you can install an older version of Ableton (or whatever DAW) that still supports x86 plugs natively

The more all around smartest alternative would be to upgrade to the latest version of Sampletank 4.
You can find it on sisite - IK Multimedia SampleTank 4 v4.2.6 Incl Keygen-R2R