454870 file download script

check these two site: [login to view URL] or [login to view URL] , its an music download site and i believe both site used same script for download mp3. i just need this same script with features. its okay if design diffrent but features should be same. i am sure they used autoindex script for these site but seems all mp3 have html extension and its redirect to another html page for download mp3 file. please show me a demo if you have this script with same featute. thank you.