Herodotus Audio Files: Chapter 12, Chapter 13, Chapter 14, Chapter 15, Chapter 16, Chapter 17, Chapter 18, Chapter 19, Book VII: Part 1, Part 2, Part 3, Part 4, Part 5, Part 6, Part 7, Part 8, Part 9, Part 10,

Online Text: https://archive.org/details/herodotuswitheng03herouoft/page/88

But note that this text version, although in an easier-to-read format is not the same as the one used for the audio.  The audio uses this one:

http://www.perseus.tufts.edu/hopper/text?doc=Perseus%3Atext%3A1999.01.0126%3Abook%3D5%3Achapter%3D79%3Asection%3D1

Themistocles Audio Files: Themistocles pt 1, Themistocles pt 2, Themistocles pt 3

Online Text: https://archive.org/details/plutarchslives02plutuoft/page/n13