Maybe this is a newbie question but I can't find a way to smoothly sync six song tracks that is way out of rhythm. I need to see at least two tracks at the same time so I have something to compare to (I rather have all 6 tracks if its possible). Can it be done in Audiosnap or Melodyne Editor? With "sync" I mean adjust the timing in each audio track manually.

You can do this with Audio Snap. But if you've never worked with it, there will be a learning curve.

Don't know enough about Melodyne to say if it can do it or not.

Thanks Grem!
I will try Audio Snap then and see if I can figure it out.

If you'd like a bit of guidance: AudioSnap Tutorial
There are others on CakeTV, more on YouTube, etc. Or you could set up a Groove3 account and buy a collection; decent stuff there.
Also, you can adjust timing in Melodyne, but unless you're aiming to quantize, it might be easier with AudioSnap.
 

Or, save yourself a LOOOOOOT of time and headache, and get some starter version of Ableton, then simply drag the tracks in there.

I just got this, but haven't decided whether I like it or not:  http://mashup.mixedinkey.com/