Want to create a non-stop audio of multiple tracks


I’m a fitness instructor and I want to create a non-stop audio file by joining different tracks of similar or close beats per minute (BPM)to play back to back with no space in between.
Which tutorial would help me learn to do that?
I how can I change the BPM of an audio track (make it faster for example)?

Please help

Try the “Change Speed” effect and/or the "Change Tempo " effects.

Have a look at this tutorial, you can ignore the parts about “recording a narration track” but the rest of the tutorial should be helpful. http://manual.audacityteam.org/man/Tutorial_-_Mixing_a_Narration_With_Background_Music