You have downloaded an incomplete or corrupted installer. Disable any 3rd-party download manager you may be using and try again. Also, if attempting to download with the crappy Internet Explorer browser and you have SP2 installed in WinXP, that could be an issue too, since using IE with WinXP SP2 is known
to corrupt downloads. Instead, download the installer using a decent browser like Firefox
, which has its own built-in and intuitive download manager.
Optionally, after disabling any download manager you may be using, you can try right-clicking
on this download link, and then "Save As" that way...
Winamp 5.54 Full (language support, see Winamp 5.54 Released thread for info)
Winamp 5.54 Full (US English installer)
right-click above and select "Save As" or "Save Link/Target As" to download installer
For "direct" downloads of other Winamp packages click here
[edit > JonnyMac] Updated Links for Winamp 5.54 Release [/edit]