Will deleting MP3s free up disk space?
Yes, although deleting them from a playlist in a music player may not delete them from the disk as well. MP3s use up a few megabytes each, if you’re trying to clear a lot of room then you would have to delete a lot of MP3s, a better choice might be seeing if there are any programs you’re not currently using and uninstalling them. The latest 3d games especially can take up a lot of room, each one can take up thousands of time more room than a single MP3.