their format. Unlike traditional books or a video program, one can listen to an audiobook while doing other tasks. Such tasks include doing the laundry, exercising, weeding and similar activities. The most popular general use of audiobooks by adults is when commuting with an automobile or while traveling with public transport, as an alternative to radio or music. Many people listen as well just to relax or as they drift off to sleep. A recent survey released by the Audio Publishers Association found that the overwhelming majority of audiobook users listen in the car, and more than two-thirds of audiobook buyers described audiobooks as relaxing and a good way to multitask. Another stated reason for choosing audiobooks over other formats is that an audio performance makes some books more interesting. Common practices of listening include: Replaying: Depending upon one's degree of attention and interest, it is often necessary to listen to segments of an audiobook more than once to allow the material to be understood and retained satisfactorily. Replaying may be done immediately or after extended periods of time. Learning: People may listen to an audiobook (usually an unabridged one) while following along in an actual book. This helps them to learn words that they may not learn correctly if they were only to read the book. This can also be a very effective way to learn a new language. Multitasking: Many audiobook listeners choose the format because it allows multitasking during otherwise mundane or routine tasks such as exercising, crafting, or cooking. Entertainment: Audiobooks have become a popular form of travel entertainment for families or commuters. Charitable and nonprofit organizations Founded in 1948, Learning Ally serves more than 300,000 K–12, college and graduate students, veterans and lifelong learners—all of whom cannot read standard print due to blindness, visual impairment, dyslexia, or other learning disabilities. Learning Ally's collection of more than 80,000 human-narrated textbooks and literature titles can be downloaded on mainstream smartphones and tablets, and is the largest of its kind in the world. Founded in 2002, Bookshare is an online library of computer-read audiobooks in accessible formats for people with print disabilities. Founded in 2005, LibriVox is also an online library of downloadable audiobooks and a free non for profit organisation developed by Hugh McGuire. It has public domain audiobooks in several languages. Calibre Audio Library is a UK charity providing a subscription-free service of unabridged audiobooks for