Try to let it be played by another program for example Winamp or Nero Media Player (or any other kind of wave player). If the sample can NOT be played then in deed those files are corrupted.
I guess those samples lost some parameters or some bits are crashed while downloading or saving. Maybe the floppy disc drive is slightly dejustified. I don't know.

Did you control all your samples if the looping parameter is set or not? Is it possible that a special setting can't be read by your PC's program?

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Greetings from Frankfurt (Germany),
Sheriff ;-)

[This message has been edited by Sheriff (edited 04-17-2005).]