Found this nice website, http://listen.grooveshark.com/ where you can listen to free MP3 online, you don’t have to download, and no media player required, you can simply run in on the internet browser.
After you browse to the page, it will take around 10-20 second to load the interface. Then there will be a big search box for you to search for the song you like.
At the top right corner of the page, you can also Login to your account, where you can create playlist, and favourite songs will be saved to your account. But, of course you will need to register for an account at the first place, and the registration is free of charge.
I perform a search on “Right Here Waiting”, one of my favourite song by Richard Marx.
Then, there will be a list of songs which is related to the keyword, and for the song you would like to play, you can click on the “+”symbol at the right side of the song name, to add that song to the playlist.
Now, a playlist will pop out from bottom of the page and you can click on the song you want to play.
While it is playing, you can perform another search and add another song to the playlist.
Have a try! http://listen.grooveshark.com/