how to program this c# program please ?

[crazy.works]

hello,

i wanna program c# program to print(merge) small musical phrase (like 20 second) on mount of songs. as a kind of reserved rights or something like that.

so i will create 2 input file,
the first browse i will use it to choose the 20 second musical phrase file which i wanna print(merge) on the songs.

and the second browse i will use it to choose the folder which include the songs

then i will create input text, to limit after how many seconds the musical phrase will be printed in each song

that is my full program idea..

so please do u have any idea about the codes, or about how can i get this done ?

thanks a lot