Notebooks and spreadsheets (Excel or Google Sheets) have always been two most useful and helpful instruments I have ever used. Whole companies were built based on pseudo-relational Excel databases (this is ofc does not scale well).
Now there is a new library in python that integrates some JS tables library seamlessly with ipywidgets and notebooks. It is news and predictably sucks a little bit (as most of interactive tables in JS).
It goes without saying that it opens up a lot of possibilities for ML annotation - you can essentially combine tables and ipywidgets easily.
As far as I see It does not have an option to embed some HTML code, but recently there just appeared and Audio widget in ipywidgets (buried in the release notes somewhere)
So you can just use this to load audio into ipysheet:
wavb = open('test.wav', "rb").read()
audio = Audio(value=wavb,
format='wav',
autoplay=False)
#data_science