Flash is the only way to get the playing time
If I could I wouldn't use it.
Edit : Now I'm working on the server part. It's the only way to get the music
First, you will only have a limited choice of beatmaps
I'm still having issues, like that :
I'll work on JavaScript later. I'll focus on music (quite easy), then sliders (quite hard).

Edit : Now I'm working on the server part. It's the only way to get the music

First, you will only have a limited choice of beatmaps

You are downloading too many maps at once. Lay off for a bit.This is what appends when trying to get osz files :/
I'll work on JavaScript later. I'll focus on music (quite easy), then sliders (quite hard).