slotMusic

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slotMusic is a type of microSD[1] memory card developed by SanDisk preloaded with music in MP3 format.[1][2] They were first available at Wal-Mart and Best Buy stores in the United States in October 2008.[3] The current selection of songs comes from Universal Music Group, Sony BMG, Warner Music Group and EMI Music.[1][2] As of mid-2011, SanDisk's website lists a total of 14 albums available in the SlotMusic format.

The audio files contain no digital rights management,[2] and are encoded at minimum bitrates of 256 to 320 kbit/s.[2][4]

SlotMusic albums may also include high-quality images and videos in multiple formats.[2] The contents of each microSD card may be altered by the user, enabling them to add or remove files from the slotMusic card as desired.[2] Another type of card, slotRadio, has been developed for 2009 and has radiolike controls. SlotRadio has more restrictions on how it works, such as not being able to backtrack to a previous song.

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