As I upload my video, everything works, but the video doesn't have any sound?
Furthermore, when I upload a .mp3, the song doesn't even play?
My speakers are fine, can someone help? x.x
Although that works, is there an easier way to play audio while editing my clips because it's hard to synchronize the videos clips to the audio, if I have to keep and going back?
No. AE is a compositing program, not an edit suite. The current implementation is as good as it gets, for the time being. If you need more, you are simply using the wrong tool and should consider switching over to Premiere Pro or something like that for your timing work. Short of that, you can always add markers while RAM previews/ audio previews play by tapping the multiply key on the numpad to place cue points....