Where can I find a collection of samples of Mandarin spoken words, annotated with pinyin and tones?
Some websites or apps you may need:

https://www.chineasy.com/ All you need. Looks like the best one.


https://www.chinesecharacterart.com/ No audio is a shortcoming


https://itunes.apple.com/us/app/hanzi-oracle/id736544977?mt=8
IOS app, not test.
Hope it's helpful