I got it to work. Keep in mind its with a mod chip
1. create folder called Patchmii in apps folder.
2. copy patchmii.dol to patchmii folder
3. rename patchmii.dol to boot.dol
4. copy di folder to apps folder
5. open di folder and rename installer.dol to boot.dol
6. copy mplayer folder to apps...