There are a lot of great places to get music and sound effects online. I generated the sound effects we use in this chapter with SFXR (http://www.drpetter.se/project_sfxr.html), which is a tool used to generate old school 8-bit sound effects that sound like something you would hear in an NES game. These kinds of sound effects may not be to your taste. OpenGameArt.org also has a large collection of sound effects (https://opengameart.org/art-search-advanced?keys=&field_art_type_tid%5B%5D=13&sort_by=count&sort_order=DESC) and music (https://opengameart.org/art-search-advanced?keys=&field_art_type_tid%5B%5D=12&sort_by=count&sort_order=DESC) with a variety of open licenses, so make sure that you look over the license of any sounds or art on that website before you use it.
Germany
Slovakia
Canada
Brazil
Singapore
Hungary
Philippines
Mexico
Thailand
Ukraine
Luxembourg
Estonia
Lithuania
Norway
Chile
United States
Great Britain
India
Spain
South Korea
Ecuador
Colombia
Taiwan
Switzerland
Indonesia
Cyprus
Denmark
Finland
Poland
Malta
Czechia
New Zealand
Austria
Turkey
France
Sweden
Italy
Egypt
Belgium
Portugal
Slovenia
Ireland
Romania
Greece
Argentina
Malaysia
South Africa
Netherlands
Bulgaria
Latvia
Australia
Japan
Russia