Hi,
The audio uploading is a great feature but in my oppinion will be complete after you make a faster loading (play) for big audio file, create a volume button (the audio player from wall and single audio file must have at least the same options like the playlist audio player have) and put a player in docker (similar with VK player)... then when you navigate on the website you can listen your songs.
In our websites when you load a page is reloading the hole page, with docker too... but you get the point
What do you think? If you like it VOTE for it.
Thank you.