Miley Cyrus

r4 nintendo ds help !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!?

i have a r4 in that i have moonshell 2,ysmenu,kenral v1.18. i cannot hear my songs in moonshell 2 but when i play games i can hear the music can anybody help me please.i beg you (and one more thing when i first on my ds it sounded like this dadin dadin and now when i on it sounds like that triangle instrument / optional )