With all this free storage space out there with Dropbox, Skydrive, Google Drive, iCloud etc, does anyone know if there is an app that can stream cloud-stored MP3 files via a wifi connection? While DropBox etc can play a song, they don't seem to allow you to play multiple songs. I'd like to be able to listen to my choice of music while at work without having to use valuable disk space on my iPad without intervention between each song.