i have a short audio clip that is copied/pasted so it repeats a few measures. But I can hear clicks between them. How not to have this? TY , its an acoustic guitar rythm.
Thats becuz you didn't fix the zero crossing on every tail and head of the audio clip.
When an audio is cut before it reach zero point or not start from zero point, you will hear pops and clicks.
There are couple ways to fix it, but its hard to type it in words.
You can google or look in youtube for how to fix/do zero crossing between audio clip.
You could also just do a fast fade out and fade in at the beginning and end of the track you are looping so, as ivanyoung mentioned, your signals line up.