Help Me

[sam2000]

Hi friends
I have N6600

i need 2 clarifications friends

1) I heard that there is a codec for playing the mp3 songs as the ringtones can anyone pls give it to me

2) I am planning to increase the memory card size to 1 gb or 512 mb but some of my friends if i put such a big size memory card then the phone gets slow is it true if so suggest a best size of memory card for my phone dude

Thanks in advance