Improve filter and renaming of audio files

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Der Media Browser hat weitere Funktionalitäten erhalten. Zum Beispiel:

Dateien Umbenennung Besseres Filtering

• [ ] Rename Files
• [ ] Rethink Filtering Files
• [ ] Fix Styling
• [ ] Deactivate Drag and Drop while File Explorer is open

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I'll implement the functionality and head it over to @vin-ni for styling and review