Will a 4 or 8gb memory card work in a sony ericsson w610i?

I use a 4GB Card (sandisk) in my W610 and it works just fine but Musicplayer becomes a bit slow while accessing al my MP3 files I use a 4GB Card (sandisk) in my W610 and it works just fine but Musicplayer becomes a bit slow while accessing al my MP3 files