Sirius Satellite Radio subscribers can now take all those channels with them wherever they may go with the Stiletto 100, described as the first “live portable satellite radio.”

You could call the Stiletto 100 the Swiss Army Knife of portable music gadgets. It does just about everything anyone could expect from a personal player. It sports WiFi connectivity for receiving Sirius over the Internet, can hold up to 100 hours of Sirius content and can store and play songs from your personal collection as long as the tunes are formatted as either MP3 or WMA files.

With the Stiletto 100 you can schedule recordings of up to six hours in length and save up to 10 hours of individual songs. The device also has a bookmarking feature that lets users flag songs for purchasing the next time the unit is connected to a computer. Price? $349.99, but that includes an AC power adaptor, headset antenna, ear buds, PC cable and Sirius’ endless gratitude, love and devotion.

If you ever wished your mobile phone was capable of doing something other than making calls, the folks at Mercora have just what you’re looking for. It’s called “Mercora M,” a service that enables you to listen to the songs on your computer when you’re anywhere but in front of your PC.

Mercora M works with Microsoft Windows Mobile 5.0-based Smartphones and Pocket PC phones, like the Motorola Q, Samsung SGH-i320 and the Palm Treo 700wx, and can turn your mobile phone into a wireless music player.

But listening to your own collection is just one of the many features included with Mercora M. The service also includes access to more than 100,000 commercial-free programmed stations searchable by artist or genre. The service also has a feature in the works that will allow customers to listen to the digital music collections of up to five friends via something Mercora likes to call “socially networked listening.”

You can take a test spin of Mercora M by grabbing the free download at the company’s Web site. If you want to remain a customer after the freebie expires, Mercora M will cost you $4.99 per month, $29.99 for six months, $49.99 for a year and $99.99 for two years.

Looking for the perfect gift for that road warrior in your life? Then check out the MojoPac, by RingCube.

The MojoPac makes any computer your computer by storing all the settings, applications and data from your PC onto a portable memory device such as an iPod, USB hard drive or USB flash memory. Plug it into a strange computer, such as a library computer or a friend’s laptop, and the desktop is instantly transformed into your own machine, including wallpaper, icons and screen savers.

All your applications and personal data are kept on the storage device, so there’s no danger of leaving anything behind when you unplug the device from a computer. Of course, there’s some unwritten law that states that all the really important software applications must take up as much disc space as possible, so you might want to use a really big portable storage device with the MojoPac. An 80 gig iPod, for example.

You can get your MojoPac working for free by checking out the one-month free trial. If you decide to purchase it before the trial ends, it will cost you $29.99, plus $14.99 per additional license for up to three licenses. Waiting until the end of the trial to purchase MojoPac will cost $49.99, with three extra licenses costing $24.99 each.

Of course, when it comes to gadgets, the 800-pound gorilla in the room is Zune, the upcoming personal player by Microsoft.

Aside from doing everything Apple’s iPod does, with the exception of playing songs formatted with Apple’s proprietary FairPlay digital rights management technology, Zune also includes an FM tuner and wireless features that allow users access to content stored on your friends’ Zunes. That is, as long as those friends happen to be in your immediate vicinity.

Microsoft says the song-sharing capability will be available for most songs sold on Microsoft’s upcoming Zune Marketplace, although some songs might have sharing restrictions placed upon them by the copyright holders.

Microsoft says Zune will appear in stores on November 14th with a price tag of $249.99. Previous rumors had priced the device anywhere between $230 and $290.

These are just a few of the gadgets that are available now, or will be available in time for the holidays. As with all gadgets, you always think you can’t live without them, and after buying them you might wish you waited for the next upgrade. Oh well, there’s always next year.