DO NOT GET AN FM TRANSMITTER. I bought one last week and it BLEW FAT CRAP! Sounded worse than AM radio. I took it back real quick. I ended up getting the tape adapter and it works great for my MP3 player. The one I bought actually sounds really good, I know someone said the bass was weak while using theirs, but while using mine I sometimes have to turn the bass down. The one you're looking at looks like a good option, and it will probably sound better than a tape adapter because it's a direct connection to the head, but it's also a lot of trouble. I say just get a tape adapter if you can, if you don't have a tape deck then install the one you're looking at.