Make an audio file play faster or slower
This is a free web service that allows you to change the tempo of any audio file of your choice while maintaining its pitch. If you feel like a song is too slow for you, you can easily speed it up without changing its key. You can also slow a song down which can be useful if you want to transcribe a song. Slow it down to a comfortable tempo for you and play along with it.
This is an example of an audio file that has had its tempo set to 1.5x with "Preserve pitch" set to true.