Gaming sound problem

[KageJuin]

my PSP was working fine, but now that I added some ISOs and such
and deleted some music files it suddenly won't make a sound anymore
YES I checked and it's not on mute -__-

 

[prowler]

You MUST of done something else wrong if it doesn't work.
Adding/Deleting ISO/Music doesn't mess up the sound.
Try and find out how you did it. You gone on settings? Turn on/off the PSP?
If nothing works, i would take it into repair in a shop, see what they say.