graph TD A[Input: Audio stem URLs, tempo and beat information, specified time points] --> B{For each audio stem and time point} B --> C[Cut a 16-beat section from the stem starting at the specified time point using Skill #197] C --> D[From the 16-beat section, extract samples of 1, 2, 4, and 8 beats in length using Skill #197, starting from each beat within the section] D --> E[Filter the extracted samples based on average amplitude, keeping only the top samples] E --> F[Rename the final selected samples according to their source stem, time point, and length] F --> G[Output: List of URLs pointing to the final selected and renamed .wav samples]