Is there a way to completely prevent the media player from using the device's speaker? I'd only like it to play music via the headphone jack. The only setting I see is for media player volume, but nothing to toggle between headphone jack and speaker other than just having headphones plugged in. I know this sounds stupid, but sometimes I cue up an album on my way to my car where I will plug it in. However it is kind of annoying to hit a song and have it blare out of the speaker before I can pause it.