Replying to Simple Video Editor for MP4

Hey guys, I tried to do some searching around but never found what I needed.  Here's the deal.  I have a Flip Mino HD and it takes video in MP4 format.  So I shot a video yesterday that is 20 minutes long and I want to speed it up so it is like a time lapse thing (down to around 5ish minutes) and throw a song on it.  This is all I want to do, so can you guys recommend a free program that will edit Mp4 format and do these two simple tasks?  Thanks!

By the way, if you need a sample video of what I'm trying to do I can find one.