Tempo warping

Hi, I am trying to prep some rock and oldies songs for a dj set but the tempo of these genres is inconsistent making beat matching a pain. Is there a way to use audacity to equalize the tempo throughout the songs?

Thanks in advance.

Effect > Sliding Time Scale.

Also, “Time Track”: http://manual.audacityteam.org/o/man/time_tracks.html

Thanks, the sliding time scale did the trick. I’ll also check out the time track.