We are finally adding VST support to AudioLab. Version 2.X support is mostly done and we are working on testing and improving it.
If you are interested in evaluating it, please contact me and I will send you installer with the crrent support.
Adding fully featured 2.4 support is surely uphill battle as anyone ever done VST probably can tell you :-D . Adding proper VSTXML support alone seems to take forever :-( . We are however fully committed to properly implementing it.
As soon as the 2.X support is finished, we will start working on the 3.X support.
With best regards,