Hi there,
I'm not the most advanced user around here by a long way but I would suggest you need to match the software running on the empeg with the emplode program running on your PC. If the two do not match then they have difficulty communicating.
The most stable releases to date are....
emplode (PC) -
http://www.empeg.com/downloads/car-emplode-v2.00.zipempeg - either...
consumer image (if you just want to use the player as a player)
http://www.empeg.com/downloads/car2-consumer-v2.00.upgradeor
developer image (if you want to use hijack or any of the other software addons)
http://www.empeg.com/downloads/car2-developer-v2.00.upgradePersonally I would go for the developer image on the empeg as it allows more freedom without any drawbacks.
See the FAQ for details on applying the software to the empeg if you've never done it before (very simple task).
Cheers, Sim