graph TD A[MP3 URL] --> B{#240 Extract all audio stems} B --> C{Check stem volume} C -->|Vocals > threshold| D[Vocals MP3] C -->|Instrumental > threshold| E[Instrumental MP3] C -->|Drums > threshold| F[Drums MP3] C -->|Bass > threshold| G[Bass MP3] C -->|Electric Guitar > threshold| H[Electric Guitar MP3] C -->|Acoustic Guitar > threshold| I[Acoustic Guitar MP3] C -->|Piano > threshold| J[Piano MP3] C -->|Synthesizer > threshold| K[Synthesizer MP3] C -->|Strings > threshold| L[Strings MP3] C -->|Wind > threshold| M[Wind MP3] D --> N[Sort stems by volume] E --> N F --> N G --> N H --> N I --> N J --> N K --> N L --> N M --> N N --> O[Return 1-10 MP3 URLs] O --> P[audio-stems]