How to output part of feild using mysql

[tony007]

Hi all. i got a huge list of mp3 that they are in diffrent folders. I put all the songs infor in mysql database in a table called files. I want a query db that output foldernames for me .The folder name is part of feiled called filename in files table. The value of filename is like this stored in db :

http://localhost/wimpy5recursive/mp3s/album1/song1.mp3
http://localhost/wimpy5recursive/mp3s/album2/song4.mp3
where the bold part is the foldername. i want to print folder name.Note:mp3s is the root folder for mp3s.The whole point is to list all folders name and link to page that holds songs inside those folders.

Furthermore, i want a query all feilds info for songs in each given folder.What i mean is that for each folder it lists all songs info iside that folder.I want to be able to tell the query what folder i want to list its song.Thanks