Get name of song from streaming

[souzadavi]

Hi, i´m trying to get the name of song from streaming. But no working.
Looks this post: http://developer.echonest.com/forums/thread/272#post3359

I couldn´t find way to get the post method work with option:

url = "http://api.soundcloud.com/tracks/"+str(track_id)+"/stream?consumer_key="+key
cmd = 'curl -X POST "http://developer.echonest.com/api/v4/track/upload" -d "api_key='+ECHO_NEST_API_KEY+'&wait=false&url='+urllib.quote(url)+'"'

thanks