I had this problem as well. The error message says "cannot find Audio/BGM/sukishou12..."
This is because the file itself isn't in the location that the program is looking for. When you unpack the rar file, put all the files in one folder (name the folder Poisoned), then do the following: Create a new folder called Audio inside the Poisoned folder. In the Audio folder, create another folder called BGM. Cut and paste sukishyou12.mp3 into BGM.
This worked for me ^-^ Hope it helps.