OK, well after alot of trial and error and searching the net (I have alot of spare time on my hands at the moment) I have figured out how make ebooks nice and readable for any mp4 player...
Alot of the cheap players (like my own) seem not to support word wrap.. meaning the words are just broken up all over the place.. making a not very enjoyable reading experience..
So you have a load of ebooks you want to read? The first step is to try this tool:
http://www.mympxplayer.org/here-df588.html
If it works for you, great, sadly it doesn't work for me so I had to find another solution.. read on if this is also the case for you..
Two things you need to know about this solution:
1.) the ebook files will be ~ 50mb
2.) If you have a shit player like me it will take about an hour(!?) to transfer the book to your player.. but hopefully it is quicker for you.. it only takes about 5 minutes to make the book though.. then you can do something else while you wait for it to transfer.
The first thing to do is to download the ebook to images tool, this enables you to turn any txt, pdf etc.. into a series of images that can then be read in the image viewer of your mp4 player:
http://ebook-to-images.software.informer.com/
Simply install and then find the file that you want to convert into images.. then just select the font size, colour, background colour etc.. and wait a couple of minutes while it turns the whole book into image files that can be read on your player!!!
Here are the settings I have been using to make my books (my player has a 1.8" screen so if yours is a little larger you will need to experiment a little bit):
MP3 Player:
Sandisk
Sansa e200 Series (this is not my player but I have had the best results with this setting)
Screen Width: 128
Screen Height: 160
Image Type: JPG (very important)
Image Tab: Anti-Aliasing ticked.. the rest kept blank
Font Tab: Arial, Size 10, Light Green Text Colour, Black Background
Text Tab: Ignore Trailing Returns ticked
Encoding: Automatic Detection (I'm not really sure what this function is about so if anyone does and wants to let me know that would be appreciated)
Output: 50 Files in Each Folder (This is VERY IMPORTANT as your player won't be able to read the image files if you have more then 99 files in a folder with most models)
Then Just click "Convert to Images" down the bottom and the folders should appear on your desktop, labeled and in order. Now make a folder for the name of your ebook in your player and then copy across (hopefully it doesn't take so long for you!!)
Then just enjoy!!
Hope this helps.. it's not the easiest process but the results are well worth it if you really want ebooks on your player that can be read.
Peace
note: you may need to also number each folder in the folder of your book 1, 2, 3, 4, etc.. so that your player goes through the book in order... only takes a few minutes