I know how to play wav and midi files but i want my program to use mp3z, and i have no idea on how to use them...

Check out Wotsit, there''s a description of the mp3 format there...

Trust me, you don''t want to parse it yourself unless you''re a god . www.xaudio.com! Does both input and output to/from memory buffers if you tell it to.

"Paranoia is the belief in a hidden order behind the visible." - Anonymous

Note that if you do create your own application to play mp3''s you''ll have to pay licencing fees or make the application free for everyone to use.

Did you confirm that evaclear?
I''ve heard alot of people saying what you are and then again just as many saying you don''t have to pay a nickle to use the algo. Some say you have to pay licensing fees to encode but not decode..I''m not sure what to think anymore .

"Paranoia is the belief in a hidden order behind the visible." - Anonymous

I like G-Audio, a free library for decoding MP3s and MODs. It doesn''t only play the files, it is also able to decode them into a DirectSoundStream, which is great if you want to mix it with other sounds (like in a game where shots and explosions can still be heard while the mp3 is playing).
If you just let a library play the sound, you won''t be able to hear other sounds anymore on most soundcards (the SBLive! is the only exception I know).

G-Audio can be found at
-> idf.net/gods

-Markus-

A great sound library is FMOD : you can play...EVERYTHING!
I found it very very simple to use (you call two functions and you play your mp3!!!)
And it has also 3D support!

See www.fmod.org