Q: How can I convert M4V to MP4 files online?

Developed by Apple, M4V format is specially designed to store videos files in iTunes Store and also protected by Apple's special FairPlay digital right management (DRM) technology. Thus, some M4V video files can only be played with iTunes and QuickTime player or any other Apple devices such as iPhone, iPad and Apple TV, etc.

Due to its bad compatibility, many users want to convert M4V videos to MP4 format, a much more popular video…

Q: "I like listening to music from Spotify and when I'm falling in love with some songs, I really want to have them on my computer or on a CD for listening while driving. Is there any way to download Spotify music to MP3? Any advice is much appreciated!" – Joanna from Quora

Spotify is one of the most popular streaming music services, who has more than 40 million music tracks in its library and about 200 million active users monthly all over the world, according to the recent report.…