Cache recordings at “/var/lib/asterisk/playback/”

Hello how can i prevent recording to be saved at “/var/lib/asterisk/playback/” ?
it seems that this folder contains audio record files of calls which have been listened by someone by using FreePBX GUI (during this process FreePBX scripts take the corresponding audio record, convert in to the file with “ogg” format and put it into this folder).
this process is a caching of audio files into storage what is done for decreasing the time of starting playback audio files in FreePBX-GUI

is there any settings to make it auto delete ? or not cache ?
i want to prevent making a script.