Indie music Web site Amie Street has been acquired by Amazon, and the site will re-direct to Amazon's MP3 store starting September 22, Amie Street announced this week.

In two weeks, Amie Street will shut down and members "will no longer be able to use AmieStreet.com or any of its services," the company said in a note to users. Users must download all their purchased music by Sept. 22; music that has already been downloaded and stored locally will continue to play.

Amie Street urged users with credit in their accounts to spend the money quickly since it will not transfer over to Amazon. The company said on its Facebook page that it would consider refunds on a case-by-case basis "as is appropriate."

Artists or labels who are owed money will be paid as usual, Amie Street said.

The company had few details on what the Amazon deal will mean for its future. "We don't have any knowledge as to whether Amazon has plans to continue Amie Street (you'll have to ask them!)" Amie Street wrote on its Facebook page.

Amie Street will reportedly focus its energy, however, on streaming music service Songza, which it acquired in 2008.

Amie Street started in 2006. It allowed artists to upload their own songs, which were sold at a price determined by demand. A song started out as a free download, for example, and increased in price – from 5 cents to 50 cents to $1 – as more and more users recommended and downloaded the song. A user earned credits for recommending a song that eventually became a site favorite.

Amie Street said artists will no longer be able to sell their music on Amie Street, but pointed them to Amazon's MP3 labels and artists guide.

The site said it will be "releasing a very select number of releases over the next few weeks," but did not elaborate. The AmieStreet.com Web site is currently down, but the company said on its Twitter feed that it will be back "definitely sometime today."

Fans of the service were not exactly pleased by the news. Many Facebook fans complained that Amazon would likely "destroy" Amie Street.

"One of the best online music services gets eaten by one of the worst," one user posted.

Others complained that the deal will lock out international users. "Unfortunately we cannot control the territories in which Amazon MP3 operates," Amie Street responded.