Ive downloaded a few of these and tried them out - anything less that 175 bpm is too slow - I found 179 bpm ideal for me and the rythm can become hypnotic at times - i ran yesterday and was concentrating on keeping pace with the music that i reached the top of one of the hills i usually dread barely noticing it
I listen to the podrunner tracks quite often when I'm running (sometimes I don't want music at all) and I really like them. I skip over the intro where he, quite reasonably, encourages donations and purchases from his site in order to support their continued production. At the moment I can't really afford it and I've found that purchasing goods from the USA usually leads to import duty and/or exorbitant postal charges that at least doubles the price paid.
I find that the 150bpm range is nice for me and 175 too fast. But that's what's great about it, you can pick the track that matches how you feel at the time. I've sometimes started with a slowish one but felt that, once it finished, I'd like to follow with a faster one. On a few occasions where I've still been going after the end of the second track a slow one has been the most I've been able to handle.
Plus the slower ones are great for getting you off to sleep at night!
Now that I can't understand. It is now 2am, I've had three pints of beer, but if I started listening to anything like a podrunner track I'd not want to sleep but get out and run!