Errors when opening music files? (samsung galaxy s duos)

FULL PHONE SPECS: Samsung Galaxy S Duos

CAUSES

- Insufficient memory

- Unsupported file formats

- Temporary software bugs

- The file may be DRM-protected

SOLUTION

- Ensure you have sufficient memory

- Ensure the music files contain the supported file formats of the device

- Restart the device to clear any software bugs

- If the file is DRM-protected, ensure you have the appropriate license to play the music file.