I'm opening up an mp3 on the browser and on the bottom of the browser, there's a pause button and the option to mute/unmute. There's also a scrollable button that allows me to play at certain times of the mp3.

If I start playing/streaming an mp3, as it plays, will it continue to download the rest of the mp3 in the cache? I am listening to long mp3s (over an hour long) and I start listening to it at home where I have wifi and then continue listening to it as I'm driving and I'm wondering if it's going to continue downloading on my 3g or by the time I leave the house, it would have downloaded in its cache on the wifi?