I already considered that. The problem however is that the Empeg unit is under the seat, and the Palm device is by the driver's seat. I wanted some fast way to get the data through the serial cable which I'm already using.
Right now, I have two ways of doing it. One through the serial but it's slow since the Palm app starts at the begining of the playlist and keep moving. The problem is that it's slow (one song per second). The second method, which is very fast (50 songs per second), requires connecting Palm to a PC to HotSync through conduit which I don't want to do.

Thanks for suggestion.