User Registration System (Login) w/ User Profiles

Hello, I was wondering the possibility of having a user login system on my website [login to view URL], and allowing each user to have a profile. My website is based around embedded music playlists from playlist.com. We have a section of the site in which users can submit a playlist to us, and we will post it in out user submitted page manually. The user will create a playlist, then fill out a form at [login to view URL] , which includes the paylist name and embed code for the player. I want to be able to have a person register for our site, and be able to embed the playlists they create in their profile instead of them sending to us and me having to do it manually. It would be great if they could go to their profile, and when they input the playlist code in the form box it would automatically create a page with their playlist embedded in it. For reference, my website is run on the WORDPRESS platform. If anyone could please let me know of the possiblities of this and the price it would cost, I would be very appreciative. Thank you!