Anki add-on: Export deck to audio (Anki 2.1)

To use this add on, users must install ffmpeg (MacOS/Linux) and libav (Window). For Window users, 1. Download and extract libav from Windows binaries provided here. 2. Add the libav /bin folder to your PATH environment variables. This add on is most effective to get audio files for shadowing practice. It gets the separated audios in the deck and combines into a big audio file. You can make an audiobook out of an Anki deck (Yeah). This add-on has multiple options for users. * Number of audios per groups : this option allows users to combine consecutive audios into groups. For example, if the number of audios per groups is 6, 6 consecutive audios will be played together. * Number of plays : this is the number of times an audio is repeated. * Number of copies : how many copies of the big audio file do you want to have. Each copy will have a different order of the audios. * Default waiting times : by default, the silence period between two audios is equal to the length of the former audio. In case this is not what you want, the default waiting times is the time between two audios. * Additional waiting times : sometimes, it is better to have longer silence period. You can use 1 or -1 to add seconds to additional time, but you can also add additional time in percentage. For example, if additional time is 30%, we will add waiting time of 30% of the back audio length. * Mode : there are three modes of ordering the audios. In Random all , all audios are shuffled, in Overview , there is no shuffle taking place, in Random subdecks , the audios in each subdeck are shuffled. There is also a Practice mode for users who are practicing shadowing. All of the above settings are applied for Glossika practice mode. In Listening practice mode, audios are played sequentially with no silence period between them. Users can save the settings for later uses too. In advance mode, users can use a csv file to config instead of setting options sequentially. The template for the file can be found in this link. This is an useful add on that should be included in your toolset to empower your language learning process.