LG VX-8000

There seems to be a problem when you send yourself ringtones via itunes midi file. the phone will play them as ringtones, but once you plug in the car kit, the phone just flashes the status light and screen, no sounds. If you change the ringer to one that came with the phone, no problem. Is there any adjustment on the settings in itunes to correct this issue? Or is it just what you have to put up with for getting free ringers?

Thanx
Larry