When starting playback of an audio file in Similarity the player window opens: you can play/pause, seek and set volume, and stretch the window for better seek. But when comparing multiple audio files of a duplicate group, the player could have a lot more to work with.
What if to give the player a separate panel inside Similarity's main window? It would then display players for all audio files in selected duplicate group, stacked.
And when starting playback, allow using of up and down arrows to navigate and activate next player while continuing to play where previous left off.
Also add function to lock playback start position to that panel so it would start playing from set start flag when next player is selected.
This idea will prevent a lot of frustrating clicking.
Btw, you should advertise SimilarityApp more. Even I found this tool by accident. And many still use sluggish, inaccurate, ineffective audio/image duplicate finding tools, while actually they could be using this gem.