Got my Treo setup with a cassette adapter (from my Roady2) and it sounds fine. All my music is in .ogg format on my 1GB Kingston card. When hooked up to my headpones or Innodock (with TravelSound speakers) I don't have any problems. However, when playing in the car, it will randomly advance to the next song. I've tried both ptunes and aeroplayer with the same results. I've tried lowering the volume on the Treo which helps, but it doesn't stop it completely.

Is it a power problem or cassette adapter? I'm also going to try to use the RadioShack in-line volume control to see if it is an impedence issue.

Any ideas?