I have a bunch of .mp4 clips that I am trying to combine for a project. I want it to be as pain free as possible to combine them. I have Quicktime and I was able to combine them by just dragging them together and saving, but when I put the video on my iphone, the sound stopped working after the first original clip was over. The video continued, but it was silent the rest of the way. Is there a way to remedy this situation? Is there another way to go about doing this that is easier than Quicktime? P.S. - If anyone can help me make my video an mp3 file wants it is done that would be great too. Sorry I am such a new person to this, but I'm just an amateur trying to help out some family members with videos and audio. Trying to take a .mp4 video of a little cousin singing and make it into a .mp3 file so she can put it on her ipod to listen and share with her friends. She wants her live performance for this so re-recording it is not an option. Thanks in advance to anyone who can help me.