mp3 from email to player I want to download an mp3 from email and listen to it through the google music player.  I currently do it through yahoo mail and jelly bean 4.2.2.  However after downloading I have to turn off and back on phone for it to show in player.  Closing the player and restarting player does not get it to recognise the newly downloaded file.  

There must be a better way?
There is. All that has to be done is having the Media Scanner run and update the index. Turning the device off and on again triggers this, but (as you said) is not a very convenient way. Unmounting/mounting the SD card would trigger it as well (and can be done via Settings&rarr;Storage) -- already a little better, but still not very user-friendly.

The most easy way would be to have an app like e.g. Rescan Media taking care for it. Rescan SD might be even more convenient, as it offers a widget. Just tap it, wait for the scan to finish, and your MP3 file should be visible from your music players.