Hi!
It is true that Retrologue libraries can only be bundled into vstsounds by us (Steinberg). The toolchain is a bit unwieldy to be honest, so we do not publish this. Partners, selling their libraries through our store will, usually, get their presets bundled by us, as a service.
HALion.7 can create vstsound libraries, but only for HALion 7 and HALion Sonic 7. Building the library creator into Retrologue, would be overkill.
On the other hand, it should be no problem to quickly jump to the unbundled presets, just as with vstsound presets. As long as they are well tagged.
Just make sure that the files can be found. On macOS that would be:
~/Library/Audio/Presets/Steinberg Media Technologies/Retrologue
Don’t know about windows, from the top of my head, sorry.
Then set your Media Bay filter to “User”:
This will already narrow the search down, by excluding the Steinberg distributed Libraries.
Now enable, for example, the “author” attribute.
Search for the author you want and enable the filter.
Voila, only stuff from that author in your list.
To save you the hassle of doing this over and over, save your search as a search preset.
So even though you can not bundle up the presets into a vstsound, you can achieve similar results by using search and filter presets.
I hope this works with lootaudio/Xenos presets. If not, get in touch with them and ask to tag them properly, Or you could also tag them yourself.
Let me know if this helps you