Windows Media Player Sync in Windows Mobile 6.5

Windows Mobile 6.5 relied on Windows Media Player Mobile to play audio and video, offering several flexible synchronization methods to transfer content between a personal computer and a mobile device. Synchronizing media required connecting the device to a PC running Windows Media Player via USB or Bluetooth, facilitated by ActiveSync on Windows XP or Windows Mobile Device Center on Windows Vista and Windows 7. These synchronization options allowed users to balance device storage constraints with audio and video library management through automated processes, manual transfers, and dynamic file conversion.

Automatic Synchronization

When set to automatic synchronization, Windows Media Player on the desktop mirrored selected playlists, albums, artists, or genres directly to the mobile device whenever it connected to the PC. If the designated media collection exceeded the device's storage capacity, desktop Windows Media Player used a priority-based list to synchronize only what would fit, skipping lower-priority items. Users could also configure an auto-fill feature, which randomly selected tracks from the desktop library to fill any remaining free space on the device.

Manual Synchronization

Manual synchronization gave users complete control over what files were transferred to the device. In the desktop application, users dragged and dropped specific tracks, video clips, or custom playlists directly onto the device panel in the sync tab. This prevented unwanted files from being added and allowed users to manage their device's storage without needing to create or adjust synchronized playlists on their computer.

Storage Target Options

Windows Media Player Mobile supported two primary storage destinations:

  • Internal Memory: Files could be synced directly to the device’s internal flash storage, typically within the default media directories.
  • Storage Card (microSD): Because Windows Mobile 6.5 devices often had limited internal memory, users could select an external memory card as the designated sync target. The desktop software recognized the internal storage and external card as separate sync destinations, allowing users to direct large media files to the card to keep the primary device memory clear.

Transcoding and Quality Downsampling

To accommodate the limited processing power, screen resolution, and storage of Windows Mobile 6.5 hardware, desktop synchronization included automatic file conversion (transcoding). When transferring media, Windows Media Player could downsample high-bitrate MP3 or WMA audio files into smaller, lower-bitrate formats. For video, the desktop client automatically converted and resized unsupported or high-resolution video files into mobile-optimized WMV formats matching the target device’s native screen resolution (such as QVGA or WVGA).

Manual File Transfer and Library Refresh

Outside of dedicated media sync tools, users could transfer compatible audio and video files directly to the device using Windows Explorer via disk drive mode or mobile device browsing. Once disconnected, Windows Media Player Mobile featured an "Update Library" option, which scanned the internal memory and storage cards for newly added media and automatically indexed the files by artist, album, and genre.