Tutorials: images found on search for sound

[brian-swan]

When a user needs to supply a sound resource in a tutorial, images come up in the search (see screen shot). If a user selects an image, he/she will get an error when trying to ->play it.
Example in this tutorial: http://tdev.ly/ozsfa

[pelikhan]

the workaround is to name your variable "sound ...". there is a filter that trigger in that case and only returns sounds. Will that work?