You've downloaded every song imaginable to your iPod to get you moving while you exercise, but you're just not getting the results you want. Well, why not add a top Hollywood fitness trainer to the mix, without having to ever set foot in Hollywood?

iTrain is a Web-based program of audio fitness classes you can download to any MP3 player, allowing you to work out with a personal trainer whenever and wherever you like. The site offers 11 fast-paced, downloadable routines such as running, cycling, strengthening and yoga that vary in length from 20 to 60 minutes. Each routine is in real time and offers various levels of difficulty befitting a novice or a pro. The energizing sounds of house, R&B, hip-hop, rock or techno play as the voice of an elite Hollywood fitness trainer eggs you on.

A few of the programs offered:

• iCycle takes riders through hills, sprints and long rides on a stationary, road or mountain bike.
• iTread is a treadmill workout for all levels of walkers, joggers and runners.
• iStretch is a combination of yoga, Pilates and dance conditioning.
• iClimb is a lower-body workout that can be used on any stair climber, elliptical machine or climbing wall.
• iStrength gives an intense, full-body workout that can be done anywhere, with or without equipment.
• iSculpt Ballet is a high-movement dance and sculpting workout focusing on the smaller muscle groups for the lean physique of a dancer.