Removing cloud audio files

Hello, I need to remove some files from the cloud because I already reached the max allowed. I know how to do it one by one or selecting many, but need more specific filters or another faster way to do it. For example, how can I remove only all the Audio files between two dates? 

And another usefull thing would be that when I apply a filter and enter a specific meeting to remove one file, after removing it and come back, the filter should stay on showing me the updated results. In the present each time I come back I have to set the filter and search again.

Thanks.