Hello, is there a free trial for The Grandeur? I want to hear if it sounds good with my MIDI files.
I think it's entirely reasonable to want to audition an expensive instrument before you buy it. Often the manufacturers' demos are quite unhelpful for your purposes.
You need to find a friend who has the instrument and send him a MIDI file of your playing, so he can create an audio file for you. Maybe someone on this forum could oblige. (I don't have it)
Nope, no trial, sorry :-)
Applications may have trials, but libraries not.
For this reason they have audio demos. Here is the only for The Grandeur :
https://www.native-instruments.com/fileadmin/ni_media/producer/kontaktsoundpack/DEFINITIVE_PIANO_COLLECTION/audio/The_Grandeur_Pop_1.mp3
How can I find out if my MIDIs sound good with the Grandeur library before purchasing something I do not like?
Midi has no sound, it is only information.
So, what you hear in the Audio demos, is exactly the same with what you will hear with your own midi files.