USB Connections

In general, USB-MSC mode enjoys wider compatibility with different com- puters and operating systems, while USB-MTP mode enables advanced features (e.g., playlist synchronization), but requires Windows XP SP1 and Windows Media Player 10 or newer.

To transfer and synchronize encrypted WMDRM10 files, USB- MTP mode (in conjunction with Windows XP and Windows Media Player 10) is required. Most online music stores and subscription services use WMDRM10 files*. Please refer to the documentation of either Microsoft or the store from which you purchased your music for more information and support.

WMDRM9 may be used for music purchases, only. WMDRM10 is necessary for subscription-based services.

Content owners use Windows Media digital rights management technology (WMDRM) to protect their intellectual property, including copyrights. This device uses WMDRM software to access WMDRM-protected content. If the WMDRM software fails to protect the content, content owners may ask Microsoft to revoke the software’s ability to use WMDRM to play or copy protected content. Revocation does not affect unprotected content. When you download licenses for protected content, you agree that Microsoft may include a revocation list with the licenses. Content owners may require you to upgrade WM- DRM to access their content. If you decline an upgrade, you will not be able to access content that requires the upgrade.

*A few examples of online music stores that support WM- DRM are: AOL Music Now, Napster To Go, URGE, Virgin Digi- tal, and Y! Music (Yahoo! Music).

Music purchased and downloaded from the iTunes music store are AAC files encrypted with Apple Fairplay DRM. The MP- C855 does not support AAC file playback. Please use only MP3, WMA, or WAV music files with your player.

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