slotMusic

slotMusic was a brand of microSD[1] memory card developed by SanDisk preloaded with music in MP3 format.

[1][2] As of mid-2011, SanDisk's website listed 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.

A slotRadio card had more restrictions on how it worked, such as not being able to backtrack to a previous song.