You're most welcome! I would suggest taking @Richard M Knight up on their very generous offer. Richard or I could easily give you various techniques and best practices, but, without sounding pedantic, editing music is an art more than a science. How to remove this chunk and stitch the music together might be very different than doing the same with that chunk just a few seconds later. If you let Richard do it for this one piece of music, there's going to be a lot more you can learn from looking at the Audition .SESX file than you'd get from a list of dos and donts from us, I would think.
That said, please feel free to come back and ask us if you need more help or advice after seeing and hearing Richard's edits on your music.
A few basic tips for cutting, stitching, mixing music:
In Audition, zoom in to where you can see the peaks and valleys of the wave form.
Listen with headphones (or earbuds) while editing. You'll pickup notes and problems much more easily than if you're using speakers--even great speakers.
Look and listen for the beat of the piece and remove/cut/stitch so that that beat is maintained. You don't want 1, 2, 3, 4, 1, 4, 1, 2, 3, 4.
Select the area of music you think you want to cut out, then turn on Loop Playback and Skip Selection (the blue and green buttons in my screenshot below, respectively). Skip Selection will let you hear a few seconds before your selected area and then immediately a few seconds after, as if the selected part was already deleted. You can then adjust the selection as needed on either end until you hear a smooth transition between the part before and after the selection. Loop Playback just replays that section over and over again while you adjust so that you don't have to keep hitting the Spacebar or the Play button. When happy, click Delete (in Waveform editor) or Shift+Delete in Multitrack mode to delete and automatically bring the ends together (Ripple Delete). Keep in mind that you might not want a hard cut--it depends on the music--and may instead want to blend the ends together with a crossfade--in very simple terms, two sound pieces overlap and blend together, which can smooth out cuts.
If at all possible, try to get stems of the music. Stems are the various tracks and instruments of the musical piece separated so that they're individually editable. This makes it much easier to cut segments without having, say, a saxophone replaced with a trumpet mid-note. Stems are often available from higher end music licensing services or individuals from whom you commission custom music, but usually aren't available if you're getting standard video- or presentation-style background music or beds from places like https://stock.adobe.com or similar libraries.
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