[_Odyssey]

flyingpete2002, I have a FMP 1.5 and i always have dirt, dust and wierd fluffy stuff collecting under the screen. I've taken mine apart several times to clean and it isn't an easy task.
But heres how to do it...

First you have to remove the control button. This is probably the hardest part. It doesn't need to be rotated counter clockwise like other nano clones. It's actually stuck to the actuation pads with a thin layer of sticky glue type material.
You have to lift the button with a very small fine flat screwdriver being careful not to break the thin plastic pad type things underneath. You have to separate the circular button from these pads very carefully, so do it slowly. Don't pull it straight off or these pads will break and the button won't be any good to you. There are 4 of these pads... just gently raise the button and slide the screwdriver under each at a time separating each one by removing the sticky stuff.
Once the button is off make sure there is no sticky residue left on them otherwise it will make it very hard to slide the guts of the unit out.

Next remove the sticker from the bottom of the player around the headphone socket and USB port. Peel it off carefully so the sticky stuff comes off with it.
Then remove the two screws from either side and take the bottom panel off.

Next, push upwards very gently on each 'white' post where the screws were attached the panel. Alternate this pushing, push one side a little then the other side. After a little while the top of the unit should 'pop out'.
Continue doing that unit there is enough of the unit out to hold firmly with your fingers and gently slide the insides out face down... otherwise it'll all just fall apart. Be careful not to catch any of the buttons/actuation pads on the way out.

Then you can clean the screen and the inside of the glass with a cotton swab or something similar.

To put it back together just reverse the process and stick the button back with the sticky material that came off with it.

Take it slow and be aware of what is what... good luck