Head Audio via lipsync Duration problem

[aznielstarkiller1]

So im trying to get this lip sync to work with my mp3 audio and some times it looks like its working however it seems like the full duration of the mp3 clip is not playing. It gets cut off at around 2 mins im not sure, but it never reaches the full end of the clip which is 5 to 7 mins and it just restarts back to the beginning.

Am i doing something wrong?

 

[atani]

Impossible to know because you don't share enough information on how you're doing that in the scene.