A remote overflow exists in Winamp. The Artist ID3v2 tag fails to perform proper bounds checking resulting in a buffer overflow. By creating a malicious MP3 file, which would be loaded via the Media Library window, a remote attacker can cause arbitrary code execution resulting in a loss of integrity.
Upgrade to version 3.0 Build 488 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.