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slotMusic was a brand 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 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]

A 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, was developed in 2009 which had radio-like controls. A slotRadio card had more restrictions on how it worked, such as not being able to backtrack to a previous song.


  1. ^ a b c Maney, Kevin (2008-09-22). "SanDisk's New SlotMusic: But Why?". Retrieved 2008-12-02.
  2. ^ a b c d e f ""slotMusic": High Quality, DRM-Free MP3 Music on microSD Cards" (Press release). SanDisk. 2008-09-22. Retrieved 2008-12-02.
  3. ^ "slotMusic Cards Now Shipping: More Than 40 Top Artists Available from Nearly Every Genre of Music" (Press release). SanDisk. 2008-10-15. Retrieved 2008-12-16.