Variable Tempo music player for Macbook
I am under increasing family pressure to trade in my windows laptop for a Macbook. I'm almost convinced, but have one sticking point. I need a music player which has a variable tempo playback capability ( I am a dance teacher and often need to slow a track while teaching). I am thinking of something that works the same way as Winamp with the Time Machine or Take it Easy plugin. Does anyone have any suggestions please?