Update README with new content attributions

README.md

@@ -34,16 +34,23 @@ Patches are encouraged and may be submitted by forking this project and
 submitting a pull request through GitHub. Please see [CONTRIBUTING.md](CONTRIBUTING.md) for more
 details.
 
-Music
+Audio
 -----
 
 Music provided by the [Free Music Archive](http://freemusicarchive.org/).
 
-- [Irsen's Tale](http://freemusicarchive.org/music/Kai_Engel/Irsens_Tale/) by
-[Kai Engel](http://freemusicarchive.org/music/Kai_Engel/).
 - [Wake Up](http://freemusicarchive.org/music/The_Kyoto_Connection/Wake_Up_1957/) by
 [The Kyoto Connection](http://freemusicarchive.org/music/The_Kyoto_Connection/).
 
+Recordings provided by the [Ambisonic Sound Library](https://library.soundfield.com/).
+
+- [Pre Game Marching Band](https://library.soundfield.com/track/163) by Watson Wu
+- [Chickens on a Farm](https://library.soundfield.com/track/129) by Watson Wu
+- [Rural Market Busker](https://library.soundfield.com/track/55) by Stephan Schutze
+- [Steamtrain Interior](https://library.soundfield.com/track/65) by Stephan Schutze
+- [Rural Road Car Pass](https://library.soundfield.com/track/57) by Stephan Schutze
+- [10 Feet from Shore](https://library.soundfield.com/track/114) by Watson Wu
+
 License
 -------