RMG v0.6.4 is released. Rosalie's Mupen GUI is a free and open-source mupen64plus GUI written in C++. It offers a simple-to-use user interface.

RMG changelog:
Fix soft and hard reset freezing RMG when using parallel-rsp
Add 'System Region' to ROM Information dialog
Add defaults for the audio hotkey settings
Improve settings dialog behavior when having plugins with the same name
Improve settings dialog behavior by sorting the plugins
Change audio resampler default to "src-linear" in RMG-Audio (thank you @Fanatic-64)

Download: RMG v0.6.4
Source:Here