Hey @zagaroth_db, I had this same issue and was not able to use the synth with the free player ever again after about 30 minutes, I wrote this post back then, hope it helps:
For you guys that have been trying to workout how to get the "Dreamy Synth" sound into your DAW of choice: in the Resources .zip file (up top under Course Resources) there's a demo version of the NI KONTAKT instrument AND a folder containing the .wav sample files for the instrument (cuz KONTAKT is basically a sample playback device at its core). Grab those samples, map 'em across the keyboard on your software or hardware sampler (I'm a Reason guy so that's NN-XT for me), increase the the decay and release on your AMP envelope, and you've basically got the Dreamy Synth. The KONTAKT instrument also does some subtle modulation of a lowpass filter envelope with each key press, you could certainly do the same for extra credit!
Tip: The A samples are named an octave too low, so A1 is actually A2, A2 is A3, etc. So for the first octave, your map's gonna be:
C1.wav
D#1.wav
F#1.wav
A1.wav
Rinse/repeat