Alias Files and Disk Utility Repairs

Hey there,
I recently moved a whole lot of movie files from iTunes on to my harddrive, they are no longer on the computer, however the space that they were previously taking up has not been reduced. I found that there were " alias " files that only appeared under All My Files. These alias files for the movies I removed cannot be opened, as the original file is not there, and cannot be moved or deleted. I ran Disk Utility verification to try and fix the problem and came back with some issues:
Volume bitmap needs minor repair for orphaned blocks.
Invalid free block count.
The volume Macintosh HD was found corrupt and needs to be repaired.
I followed the prompts, restarting my computer and holding down command and R and opening Disk Utility and running disk verification and repair, coming abck with no problems and this restarting the computer again. However once I had done so, I found the alias files still to be stuck, and running the disk verification and repair AGAIN it's still corrupt and repair just comes back with
The disk "Macintosh HD" could not be unmounted.
Any suggestions?
Thanks, Connie
I press Delete Alias and it just reappears.
I followed the repair prompts and these issues still appear.

Some are movie files, some are documents, some are backups of documents, some are music files.
The only options that appear when right click are :
> Open
> Open enclosing folder
[does nothing]
> Get Info
> Quick Look

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Alias Files and Disk Utility Repairs

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