file corrupted or unavailable

[tiggerstaci]

wtf!!! I downloaded 1 song just fine, then all of a sudden, I can't get any of the downloads to be ringtones. I get the error message

"This ringtone file is corrupt or unavailable. Please choose a different ringtone."

I have a T-Mobile Dash.

Any clues?

PS I have 1 that has worked since tuesday and still does, but nothing else will.