When i'm listening to concerts on an iphone using 3G, after the first track is played, the second will start but then stop and skip to the third.  This will continue unless i manually skip tracks or pause and restart the song.  If i manually select a new track, again one will play fine then it will usually skip again.  Any ideas?  i'm new to the vault, but this is happening on every concert i've tried.

thanks for any help