With a really small amount of modifications I managed to get the musics work. Run speed seems to be fine on N9. So basically I converted (not just renamed) the .ogg format musics in \data\music to .wav format, and modified the content of hexagon-103\lib\armeabi-v7a\libOFAndroidApp.so & libOFAndroidApp_neon.so (these are the files containing the "playlist"), to match the new formats. Mp3 is not supported, only wav. - There must be something wrong with the module. That's all, now you can play a fully functional SuperHexagon if you really want to. I know it might not be the best solution to have, but for now is the only one available, I guess.