i've downloaded this & i'm using a samsung note 4 so a good spec & i played wonderboy on it & the sound is terrible & keeps skipping plus other sound issues. It really needs a good overhaul this app as there is quite a few issues with it besides the sound issues it keeps re-starting & quitting. It would be good if these major problems are fixed, as Mame4droid is way behind using roms from 0.139 as the windows Mame is now on 0.180. The person who has made this app should talk with the person who made Mame4droid as that is nearly perfect. I do wish Mame4droid could be compiled to use the new roms 0.180. A program needs to be made so that people could compile Mame4droid each time theres a update of roms etc. THANKS