Samsung Galaxy S :: Music (mp3) Playback Application Close Part Way Through Track

during music (mp3) playback, the application will close part-way through a track for no reason. It might happen on the first or the fourth track, but at some time during playback the music will stop and when I look at the phone there are no apps running. I've been listening to mp3's for a few days now and I've tried using both the standard Music Player and the doubleTwist player but I keep getting the same problem.

I've tried playing music from internal and external SD storages, and I don't have any other apps running at the same time. I wait a minute after the player stops before re-opening the player and playing the same track that stopped from the start and it plays through fine. I found a few posts that discussed music playback problems for the Galaxy S and other phones running 2.1, but they all seemed to relate to actual playback problems (i.e. brief silences or pops and hisses during playback) rather than the player itself stopping.