I have been using Tixati for many years and am a avid supporter besides the lack of options to select multiple and/or all files at once.  Will you please add the options to select multiple files to delete at one time!!! Thank you

+1 for this

Unless I misunderstand the request, or you are not using Windows like I am, then this is already a feature that I use all the time.

In the list of files for a torrent I can select multiple files the same way I would in Windows Explorer: After I click the first file to highlight it I hold the ctrl key and click on the other files individually or hold the shift key and click the last file in the list I want to select. When I right-click on any of the highlighted files the menu opens and I click delete.

If I want to delete multiple torrents/downloads I do it basically the same way except I click on the torrents instead of the files. Then click the toolbar button to Remove and select Remove and Delete.