Though this site has some oriental, non-understandable signs, it’s in English; so don’t worry, you’ll be able to see its contents. Ethaimusic.
com is a Thai site oriented to American public, and its purpose is to promote Thai music to the world. If you want to learn Thai through music, you will find it very interesting. Through it you will access many original Thai songs by Thai artists, all for free. With Flash audio streaming you can listen to the songs straight away, and the site is permanently updated with new material. You can read the lyrics in Thai, or in Roman letters if you cannot read Thai yet; however, many of the songs have been translated into English. If you like any of the songs that you have listened to, the site encourages you to buy the full albums from online stores, such as ethaicd.com. You should have in mind the Thai songs are here as samples; you can only listen to the songs while connected to the internet, since there are no mp3 downloads. On every page you will see a link to buy the song by clicking on the album cover. 
