Cannot insert attachment into the database error

I have a couple of mp3 files that play just fine on my desktop but when I attempt to upload them into my site I get the error message “Cannot insert attachment into the database.”

I turned on debugging but that doesn’t yield anything. For what it’s worth, I have tried uploading the files on three different sites at two different web hosts and the uploads consistently failed.

Can anyone provide any suggestions or insights?

Thank you!