- Add mapFormatToDisplayName function to convert container formats to display names
- Map 'MPEG' container format to 'MP3' for better user experience
- Map other common formats: WAVE->WAV, FLAC->FLAC, AAC->AAC, etc.
- Fallback to file extension if container format not recognized
- Apply format mapping in both successful and error cases
- Ensure consistent format display across the application
Now MP3 files will display as 'MP3' instead of 'MPEG' in the UI.