I am trying to download mp3 file to users machine without his/her consent while they are listening the song.So, next time they visit that web page they would not have to download same mp3, but palypack from the local file. this will save some bandwidth for me and for them. it something pandora used to do but I really don't know how to.
any ideas?
Don't do this.
Most files are cached anyway.
But if you really want to add this (because users asked for it), make it optional (default off).
downloading files to users machine?