Posting audio for students

Hi!
I'm looking for a simple way to post audio files for students. Many of my students are on dial up connections at home and can't get the files that I inserted into Dreamweaver pages on a page on my class blog ( http://mswift.edublogs.org/student-work/ ). At my school they play nicely. At the kids' homes, they're getting messages that they have to download the file, which takes a LONG time on dial up. I was thinking I could use Gcast or drop.io. I've never used either one and really don't want to spend much more time on this. Does anyone have any suggestions for me? I'm not ready for podcasting yet, but hope to get there some day. It has already taken hours, but I don't want the kids to miss the opportunity to share at home or with relatives. I used audacity, but just saved the recordings as .wav files.