i think last.fm is a good site but there is prob a better site

This site seems to be 'the' major web site for music of Turkmenistan - http://www.turkmenmusic.com/

You don't, but on other sites you can! This site is about sharing information, not sharing music. We do have a category about music, though. It is under the Arts and Entertainment.

http://mp3detective.comMp3Detective - The best site for mp3 nigeria music.

If you know for certain that the music is not copyrighted, you can add it to your site. Do not automatically assume that it is okay to add original music that is found on another site to your site, though. It's best to contact the site owner to ask permission to use their original work, even if you do not think the music is copyrighted.