help me in sound mix

hello every one i am new here , this made me very glad , ineed your help to make sound mix between tow tracks this is my idea by more deatils :
if i have tow sound trackes i want to mix them in new file and they run both time
please help me very fast

 

hey any one answer me please fast .
ineed it if the question not clear tell me
byeee

 

Try this http://www.google.co.in/search?q=sound mixing software

 

thank u for responding but i need code or idea to make my own programe
i didnt need software put code .

 

ok i did download mixpad can any one tell me how its been made what the basic idea help me to make program similar it