“This book has been debated for ages,” said Nguyen, a bookseller on Hanoi’s Nguyen Xi book street, who gave only his first name for fear of inviting backlash against his store.

Funnily enough, this could be more identifying than if he gave his last name. There are more Nguyen last names than first names.

Can you use an aux cable? Just thinking of old school solutions

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Is a dedicated mp3 player out of the question? Would be a simple solution that doesn’t require any internet access for when you’re in areas with poor reception.