Winamp 5.34a Security Patch includes a patched version of in_mp4.dll (v1.22) that fixes the MP4 file parsing buffer overflow vulnerability. The vulnerability is caused due to an error within the handling of MP4 files and can be exploited to cause memory corruption via a specially crafted MP4 file. Successful exploitation allows execution of arbitrary code.
The latest version of Winamp Full and Winamp Lite are also available for download on FreewareFiles.