Ableton Forum

It's about warping, I have tried a lot of things to try to warp this one song on beat but I'm failing miserably.
The song is analyzed by ableton as 150bpm (it's an acapella), I'm trying to warp it to 130.
Whenever I mess with the transients it's either slow or speeds up at awkward moments.
I have ...

I figured out the assigning to the key aka midi/controller.
A little while after the post. But another question I have is this:
What if I wanted to rework a whole song though?
I made a post in general forums and no one has responded yet.
But I basically want to recreate Justice's cover of Master of ...

I mainly have a question about sampler cause I'm trying to redo the metallica justice cover of master of puppets. (as a training/learning how to use it kind of thing) and I can get the first clip....but trying to figure out to turn all those samples into a single song. I was able/can guess how they ...

I am messing around with sampler, not simpler.
And after googling and youtubing I still don't know how to sample in sampler.
The problem I am having is that I have the sample I want, drag it from the audio to sampler....but then, I am trying to find out how to play it in sampler and have a box of it ...