You could handle this with a CSS snippet.
I’m not skilled at CSS in Obsidian, so I don’t know if this is the best tag to use, but this successfully resizes an mp3 embed for me.
But I don’t know what all “media-embed” covers. So it might resize things you don’t want.
.media-embed { max-width: 200px !important;}
There may be other attributes you can edit to change the overall shape and size of the player display, rather than just it’s width. (Roundness, padding, etc.) I don’t know. There is also likely a way to only resize it when it is inside dataview.
