Hi, I am having this very frustrating and difficult problem with my audio in 2014 after effects cc. When I drag the audio and play it, it works just fine. But as soon as I apply an effect such as lowering the audio levels, etc., it does not show this, as in you can not hear it. Further issues with this problem, whenever I trim my comp (the trim to comp right click option on timeline) it changes the position in which I had the audio automatically. Further, if I keep the audio the same without any effects on it, when I render the video it also changes the position in the song then what I put it at originally. If you need more details I can provide more evidence and problems that have to go along with the audio such as dragging a second audio in and it changed the position of the first audio layer by itself. I have already tried everything possible and now looking for help from the pros.
Indeed nobody can tell you anything without exact system info or other technical details like the sample rates of the files, their format, screenshots and so on.
If you don't feel like sharing further information as Mylenium suggests, you can try converting your audio file to a WAV. See if that helps. Also, what, exact, version number of AE CC 2014 are you using?
Are you still facing this problem? If not, let us know how you solved it. If so, please let us know so we can assist you further.