I use a program called Audacity to change the music. This is required for this tutorial.
1. Open Audacity
2. In Audacity click go to file than open
3. Go to your Wonderland Adventures game folder. then click data folder and music folder open any of the .ogg files.
4. You now have a wonderland adventures music which you can save as an mp3 if you want.
5. in audacity go to Project and then import audio
6. select the mp3 you want as a WA music
7. after importing, delete the music with one number on it. that's the one you opened first.
8. go to file and export as ogg vorbis. Go back to the WA music folder and save. It is strongly recommended you create a backup before saving.
9. Play WA. You should have your music on it!
This tutorial can also help you convert ogg to mp3.
