A long time mp3 user, I was real excited to use this little gizmo with my car stereo. Shortly after acquiring the iRock, I had a major problem. The wires between the jack and the unit easily severed. Too difficult to splice the wires back together, the unit is now useless. I discovered this engineering flaw too late. Would not recommend it.Really disappointed. I hope they fix this flaw as the unit would create a ton of utility.