Itunes like player software

Dear Sirs. We are looking for a company what are able to build a piece of software - almost identical in look and feel, as the Itunes software, we are talking very nice design and usability. The player / software, will present products (imported by xml through internet --> we create feed from database) just like Itunes on the splash page after starting the software. The software must be able to play a various of media files, why it should be based on the windows media player platform. The player will present different items for shopping - again, just like Itunes software. We only wish contacts from people who can show similar project developement, as this is not for newbees. Please give link til similar references.