[marknutter]

This is a great idea, but unfortunately doesn't help us runners who find music distracting while running.

[ndepoel]

Try using a metronome then. I'm sure there's plenty of apps available for that.

[jaynos]

I picture a "Tell Tale Heart" scenario. This would drive me crazy.

[brianbreslin]

I use my gps watch for this. So I try to stay over a certain pace.