i got my problems fix… the n64 folder is mupen64plus. they changed it so you can push x or m at rom start to change the plugin used like Rice. more over do a source based install of the mupen64plus experimental packages then use the rice version. it run things a lot better. back up your config file like for your controller it will replace all settings back to default. also it seems that mupen64plus uses it own config file the mupen64plus.cfg i had to edit it i was getting no sound because i was using a HDMI to DVI converter to use a monitor and using the audio jack for audio even tho retro pie was using the jack mupen64plus was still trying to use the HDMI. also had to add my controller to the autoinput.ini file for it to see the joy pad. was alot more work then i thought for setup.
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