If you have windows XP, open any wave file in the built in sound editor. Then, click file, save as... In the save as dialogue, click the change settings button (near where you click the save button.) Under the 'format' drop down menu, choose IMA ADPCM, then choose 22.050 kHz, 16 bits, mono. Then click ok and save, it will then work, i've tried it! Also, dont forget to add your song to the csf files and the theme.ini file.
