media player that lets me delete a file directly from the playlist AND hard drive, quickly

Hi, I have lots of movie clips I downloaded from youtube (whenever I see an interesting video I just right click it and hit download). I also have a few tv shows I downloaded as well, and I havent cleaned the folder out in over a year. So I have about 350 gb (over several hundred) video files! Many of them were saved because I didnt want it to keep freezing as I watched it streaming, so I just hit the download button instead but never got to check them out. Many I dont need, many I would like to save.

Many of them dont have descriptive names, (video1, video2) etc. So I cant sort them by name. So I tried to sort them 1 at a time but it takes forever- you have to click the file, wait for media player to load, then it starts 5 seconds later. Then I briefly scan through the video for a few seconds, then I stop the video, close the player, then I can finally delete the video, or move it to the save folder. I wish

Here is where I need help- If I  could find a program that would load a bunch of files to media player playlist, I could hit play, then after I scan through the video I would like to be able to delete it, but keep media player open and have it load the next video. Is this possible? The file types are mostly .MP4 and .FLV. Any info is appreciated.