I've built a web-based tool at fretloops.com that should be useful for anyone wanting to build speed and accuracy when playing fast licks. From the about page: "FretLoops lets you create loops of single note lines, and play them back with variable tempo. This is ideal for practicing fast, cycling phrases that require training and muscle memory--repeating legato phrases, tapping licks, sweeping licks, etc." Here is a sample of an Yngwie lick. Try playing it at a slow speed and then bump up the tempo as you get the patterns under your fingers. I'm looking for any feedback. This is a one-person non-commercial enterprise, and I'm just trying to share something that has been useful for me. You are helping me out by trying it in different browsers, so let me know if you hit any issues. This is all HTML5/CSS/JS, not Flash, so older browsers may not work well. The save function gives you a URL that you can use to return to the loop. I don't have user accounts built yet, but will do so soon. At that point every user can have a list of their loops. Thanks and please let me know what you think!