Basics and formats

In Vectorian Giotto you can easily make animations with audio effects or accompanying music. Vectorian Giotto supports importing of WAW and MP3 file formats. You can further manipulate these sounds and arrange them by your preference in export. Better the desired quality, the larger exported file will be.
If the sound you incorporate is longer than animation itself, then in export, after one pass of animation, the audio file will continue to play until its end. If the animation loops is set to loop then the sounds will overlap. Therefore, you should make sure that you have synchronized the length of audio file and animation.

For incorporating sound in animation it would be best if you would use separate layers for sound. This will enable you to manipulate the animation layers without interference, independently of the sound itself.