Map the sound to a cause

What you hearLikely causeFirst fix
Sharp tick / popAmplitude or phase step at the joinLevel splice / pick matched ends
Short hole / hiccupSilence padding at head or tailTrim zero regions
Whoosh that “restarts”Reverb/delay tail cut offLoop where wash is steady
Pitchy blipBad crossfade or time-stretch at the edgeUndo stretch; re-export clean

How to listen so you are not guessing

Export (or bounce) a test that is only the last second + the first second of the file, then loop that tiny clip. If the bug is real, you will hear it every two seconds. Fixing “the whole mix” while the bug lives in 64 samples at the edge wastes time.

Fast path vs surgical path

Fast: drop the file into Loop Music and let it search for a splice and level the seam (~20 seconds). Best for beds and practice loops.

Surgical: in a DAW, zoom to the sample level, align zero-crossings, match RMS on both sides of the cut, export WAV. Best when the loop must stay musically exact (one-bar drums, keyed sound design).

After the file is clean, stop re-breaking it

Editors that trim audio ends (CapCut, Premiere, Resolve) can put the click back. If a host keeps adding the tick, check whether the timeline still contains your seamless file or a re-trimmed derivative. See also CapCut and OBS / Twitch.