Wish those sparks came in another color? Or maybe moved faster, or slower? Well then DERIVE IT! Make your own version, and even sell it the catalog for a small markup over my original, and you can keep the extra profits for yourself! You can express yourself AND earn credits at the same time. How's that for a sweet deal? You'll need a full account on IMVU, as well as a copy of Previewer. You can find out more about Deriving on the IMVU's Education Center. Below are the templates you'll need to get started:

This is the texture map for the Sparkles. Each color line corresponds with a bar in the Opacity map. If you wish to change the colors, make sure they line up with the Opacity map or the color flashes will not be visible. If you want the sparks to all be the same color, just make this image a solid color:

This is the Opacity layer for the Sparkles. It looks like gibberish, but all you need to know is that the more white dashes, the more often the sparks are visible. Less dashes mean shorter visible time for the sparks. Don't use Color here, instead add your color to the Texture Map. And make sure you have alot of black or the sparkles won't flash, they will just stay on. Very boring! The sparkles look best when they sparkle!:

To add sound, I highly recommend you download and use Audacity. It's a free sound editing tool that can export out OGG sound files. OGG sound files compress down to less then 1/10th the file size of WAV files. SO USE OGG FILES!!! You can download it here:
http://audacity.sourceforge.net/