Nokia 6101 / 6102

Well i've ordered a CA-42 cable from ebay, got it for like 12$, not too shabby. But i got a question, when i use the nokia PC suite, is it for transferring mp3's to the phone? or other types of audio such as midi or others? I wasnt sure because i had seen where some people had said the pc suite wont transfer MP3's

I only want people to tell me if they are SURE, not if they "think" so...

thanks in advance.