Sometimes you can't find the file you want to upload in the finder window. This could be one of two reasons:
1. The file is in a format not supported by 4Laughs - See What File Formats Can I Upload?
2. The file is larger than 250MB, which is the biggest size we can successfully upload

In both cases you will have to re-edit your clip to be smaller than 250MB, and in a format 4Laughs supports.