All of the songs play on my Samsung phone speaker but only the first 4 I downloaded play on my car's speakers. The whole point of downloading the music was to play it through the car speakers.

Is there a better player for the Samsung phone? I will probably be buying a new phone in August (S6 Edge is what I am considering) ... so I need one that will be compatible with that. Also - wondering if it is better just to buy a mp3 player. If I continue to use my phone as a player, I don't mind paying for the software - just not sure what is best.
Thank you!