I am planning a short background loop for a display that will run continuously during an exhibition. The main constraint is a smooth return from the end of the file to its beginning. I want to treat that boundary separately from any distracting texture elsewhere in the track. I bookmarked remove suno artifacts while gathering possible references for the second question. Before choosing any processing, I would mark candidate loop points and listen through several repetitions. The playback system also needs checking because the actual player may introduce a gap between files. I would leave decisions about texture until the loop and player behavior have been checked. Keeping the original available should help us judge whether a trial preserves the intended atmosphere. The final check would use the actual speakers and the expected exhibition playback level. What would you check first when preparing this kind of continuous playback?