oh btw i found it works better to play off the hdd of the ps3 than the usb drive itselfMessage Edited by BluAlex on 02-09-2010 05:58 PM
You must have slow USB drives. All of mine play fine, USB flash and hard disk drives, SD/HD.
Alternatively, you can just highlight the drive in the video menu, and press triangle, and click display all.
Provided its a supported format it will show up.
Triangle; Display all, will almost always negate the need to put in specifically named folders.
The problem you are likely having is that while ps3 supports those formats it has to equal other specifications. A personal example I was having problems getting .avi's to work and it turned out I was encoding them in an unrecognized audio format. I highly recommend a freeware called Super Converter. It has a ps3 option and will encode it for you right 90% of the time.