Media file not in use can't be deleted because WinXP thinks it isin use

[Guest chas]

I have some media files on USB drives. Most of them I can move or

delete but for some when I try to I get error messages like this

 

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Error Deleting File or Folder

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Cannot delete

Sliders_Das_Tor_in_eine_fremde_Dimension_07.05.19_13-20_kabel1_60_TVOON_DE.mpg:

It is being used by another person or program.

 

Close any programs that might be using the file and try again.

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OK

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This happens even if I reboot. I'm using Windows XP Pro.

Any ideas?

Thanks,

Chas