Hi Hans,
thanks for your praise. The big part of this work is made by you 
I don´t order over AliExpress. For me it feels kinda cheesy and I always think about customs. And it could be that those modules are really cheap clones from the “original” DFPLayer. But maybe Iam just overcautious
Maybe it will be necessary to sync (or trigger it at the correct part of the code) with the kind of code needed for WS2812. We will see.
At the weekend I will try to find time to add sound. Maybe I can figure it out by myself 
The time for my projects is also a big problem for me. That´s why I always try to gather everything I need, before I start. So it could be I start to build the Enterprise much later than I would like to.
Your ability to write a working code without having the parts to test it is astounding and a great skill. So how can you help quicker with just a piece of wood???
What about using a breadboard?
PS: rather a bumpy but helpful forum than a super working one without great help