The jog.fm app detects how fast you're running and plays the best songs automatically.

Prefer a consistent pace? No problem. You can easily set a pace for yourself. You can even include a warmup song if you'd like.

Need a speed boost? Just press the speed buttons in the app. Cooling down? Press the down arrow.

A run is a terrible time to have to skip through tons of songs you don't like. Everyone's got their own taste in workout music. That's why the app plays YOUR music from YOUR iTunes library.

The app learns which songs you like to listen to. If you skip a song enough, it's safe to say that you don't like working out to that song. It won't be played anymore.

If you love a song, you can flag it after your run and it'll be played more often.

The app plays music that is located in your iTunes library on your iPhone or iPod Touch. It is not a streaming music app. The app does not currently support iTunes Match.

Using Nike+? Make sure you go to "Settings" in Nike+ and be sure to turn off "Music Tied to Run Controls"