i have a weird problem with the sounds of the neo geo games in gngeo,at the beginning i had sound with no problem,then i installed xgngeo and it was good through it too but suddenly i stopped hearing any sound.. i tried to open the games with x terminal but again no sound.. should i uninstall xgngeo or gngeo and reinstall them? or maybe something else..

Edit: i saw that the problem is not only with gngeo or xgngeo,i have more games without sound: marbles,lxdoom,sdl quake and all the neo geo games that i have,i only got sound in chess and mahjong but the most strange is that marbles is a default game that comes with the nokia 770 like chess and mahjong also.. i didn't touch nothing in the files inside the system and i really got no idea what can be the problem but it's driving me crazy.. if someone have some idea please let me know,thank u