So first off, I find it a bit odd that there's no specific forum/category for the store itself. I figured the download client is the closest matching category, so that's why I stuck this there.
But onto my issue and my suggestion for how to "fix" it:
It has always irked me that the product page and the main store page pop-up Audio Demo players are different.
They really should be the exact same as the lack of a scrollable timeline/visualization on the "store" version doesn't allow you to easily scrub through dry/wet and kit medleys or even simply go back to any specific part you want to hear again.
Having to open another page to get that basic functionality feels entirely arbitrary.
I assume screen space was the concern for doing it this way but on my end the "store" version is all of 59 pixels high while the "product" version is 80 pixels.
I'm personally not too bothered by a pop up player I myself deliberately brought up taking up 7.4% of the screen instead of 5.5%, if it means it can fit functionality.
The lack of a volume slider on both versions of the player is also an issue.
Not all mixes or sounds are equal so having to turn my system audio up and down constantly to properly hear or not be deafened is more than a little bit annoying.
A simple vertical volume slider between the play controls and the text description would be ideal and probably look the best as well.