This indicates an attack attempt against a remote code execution vulnerability in Music Animation Machine MIDI Player.
The vulnerability is caused by an error when the vulnerable software handles a specially crafted mamx file. It allows a remote attacker to execute arbitrary code.
Music Animation Machine MIDI Player 2006aug19 Release 03
System Compromise: Remote attackers can gain control of vulnerable systems.
Currently we are not aware of any patches supplied by the vendor for this issue.