Hey Im new, i would like , would appreciate assistance on writing a program to modify music files play speed (Tempo), like Goldwave does, and save the music file slowed down. do i need to write a class to do this multiple time, like i want it to change tempo fo all media files in a folder, where do i start?, is there a certian Class that helps make this task easier, or do i have to write my own, any suggestioin would help, Thanks in advance.