Music is imported into MixTape by simply drag/dropping from iTunes. It then appears in the MixTape library with tabs showing where the individual beats are and these tabs can be used to either set the 'master' tempo for the mix, or to bring a tune in sync.

Once in sync the track can be dragged around the mix, or have it's in and out points set and everything will "snap to grid" aligning itself perfectly with the beat. The beat matching is far more accurate than manual beat matching meaning large overlaps and mashups several minutes long are both possible and simple.

Fader (volume) curves are set by just dragging control points to get the desired effect.

And, honestly, that's pretty much it. The rest, the bit involving creativity, is up to you!