Startup company doubleTwist today launched a public beta of a new universal media application for the Mac that’s like iTunes for everything.

doubleTwist’s goal for the product is to be “a single, streamlined interface that connects to any device, media source or network.” In other words, they want to make moving your media around, from your computer, to websites, to gadgets, a complete no-brainer.

Here’s doubleTwist’s intro video:

If doubleTwist can get this right, it could radically simplify working with media.

The beta Mac application is available as a free download at doubleTwist (Intel Mac and Leopard required). The Windows remains in private beta but is expected for final release in March.

Details below.

Here’s a list of the devices that doubleTwist currently works with, or plans to support:

• BlackBerry Curve, Pearl, Storm and Flip
• Sony PSP
• INQ1 by INQ
• G1 and Android phones
• Nokia N & E Series phones, including the N95, E61i, E62, and many others
• Sony Ericsson Walkman & Cybershot phones
• Windows Mobile 5.0/6.0 platform (e.g. Treo, HTC, Palm) — currently PC only, will be available for the Mac very soon
• LG Viewty, LG Voyager and Shine
• Motorola (V9 and V3xx) and most Razr phones
• Zune (sync is via Zune software) — PC only
• Sansa e200 series and Sansa View
• Amazon Kindle
• iPhone — currently PC only, stay tuned for Mac support!
• iPod — currently PC only, stay tuned for Mac support!
• Nintendo DSi — coming soon!
• Most digital cameras
• Most flash-memory-based camcorders are supported

via MacRumors