Music only plays for a second and then ends?

When I successfully copy my music to my SD card, each song only plays for a second and then continues onto the next song. I was able to remedy this by copying each song over individually, but obviously this is untenable in the long-run. Might this be an issue with my new SD, am I copying too fast, or what else might it be? I was able to replicate this for skipping to the center of a song. I can't hear an entire second, but it does seek to the center of the song and play a bit of it. If I try to go back to the beginning of the song after every skip, the Music Player eventually crashes. For any of the mp3s with these issues, if I restart my phone it deletes these songs .