Web designs (landing pages, squeeze pages and site designs) come with all the html/page, css and graphics elements delivered in a a .zip file. You will need a utility to unzip them before use.
WordPress themes are delivered with all the .php files as well the css and graphics (in other words complete)
All audio is in mp3 format 256 kbps 44100 khz (TWICE the quality of normal Internet mp3) and again delivered in a .zip file.