Did you know that you can slow down music so that you can practice with it? If you are trying to perfect a riff, it helps to hear it slowed down.
Select the audio clip in Mixcraft, and view it on the Sound tab. Over on the left, change it to Transpose, and change the setting to 125% to slow it down a bit.
You can burn it to a CD or render it to a new MP3 file (Mp3, Ogg, Wav or Wma)...or simply play the file directly in Mixcraft.
If you haven't already, download Mixcraft.