A little late, but thanks for your answer about fading. That is obvious. So no resampling. New question about Low Latency kernel Ubuntu Studio in which I am using Strawberry now. Is this kernel only for recording or also useful in audio playback? What is the best setting for the buffer? Thanks.
@Ton Answer my own question about low latency. It was difficult to find because most of the internet is about recording. Not about playback.
I liked this explanation. https://medium.com/@juliozynger/your-app-and-low-laatcy-audio-output-d21d7b672305 and this one https://juce.com/ I will get there step by step. I think.