I made a website called <a href="http://tunejet.net" rel="nofollow">http://tunejet.net</a> that lets people play MP3s on virtually any platform that runs Chrome (including iOS). You can either store your songs in a public Dropbox folder or another server and point tunejet to the URLs, or you can find them online. It's pretty convenient, I think, and it's a nice iTunes workaround.