Samsung SCH-A670

I actually looked at the message with the pic and saw that I could scroll to the sound file (just go this phone, still learning how to use it) and the song was there, it plays and I saved it. 🙂

Now my problem is, it doesnt play the whole song, it stops playing after 6 seconds, when there is at least a good 20 seconds of the song. ☹️

Any ideas on how to fix this??

Thanks