If it's packaged in Smart Pro I am sure it is licensed for Dolphin Software/BOONEX. But like sammie said...any stock photo house would solve that problem if your unsure.
But Boonex does a good job on NOT to "infringe on royality rights" And the software does a good job at only permitting media that is self authored or "shareware distributable". For instance you can not upload paid music to your musice player as it comes with a license which restricts and legally protects the author or artisit from mass duplication and sydication.
If your ecard widget comes stock with 10 sample cards... I am 99.5% sure they are properly licensed or the wouldn't be in Smart Pro.! The lawyer sounds like...He's trying to develop an angle on Dolphin. lol