Podcast/mp3 files

I maintain the website for my church and we post our sermon every Sunday for download from our website (www.cdomaha.com) and iTunes. On the WebFTP i am getting this message for almost all of our mp3 files:

“Files which are too big can’t be downloaded, uploaded, copied, moved, searched, zipped, unzipped, viewed or edited; they can only be renamed, chmodded or deleted.”

When I click the link to a sermon on our website it give me this error:
“Not Found
The requested URL /podcastfiles/03.27.11FinalSermon.mp3 was not found on this server.
Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.”

Is there a fix to this issue? Thanks for your help!

don’t use webfttp
use an ftp program such as filezilla to avoid the size / time restrictions impossed by webftp