WOA WOA WOA.
I think we got some terms crossed and mixed up here. You originally said how do I MOUNT the images. That's what Virutal CloneDrive is for. To CREATE the images is another whole ballgame.
-Download latest ImgBurn (2.4.1.0 at the time of this writing)
-Select "create image from files/folder"
-Add your blu-ray folder from the hard drive
-In the options, make SURE UDF 2.5 is selected. This is IMPORTANT!
-Create the ISO
Now when you have the ISO on your hard drive, you can mount it using Virtual CloneDrive.
But, if you're just streaming it, don't you just want an m2ts anyway? So using TSRemux just output the m2ts and have your media serving software serve that up to the PS3. No need to create a full Blu-ray disc structure in that case.