More information would help . . .
Trying to load audio books onto my device (e250r). the format of the book is .wma. manual says this is supported, but the device is saying it does not.
Where are the books from?
How are you trying to load them onto the player?
How is the device saying they are not supported?
What USB transfer mode are you usiing?
I also do not know how to get the device to recognize the micro disk.
What size is it? Only 2GB (and smaller) cards are supported by this player. Another possibility:
I can’t see it when connected to my computer either. I copies the book onto the disk when it was inserted into my computer since I couldn’t get it to copy onto the device.
From the e200R User’s Manual:
Your Sansa e200R Rhapsody can operate in two different USB modes, Rhapsody (Mass Storage Class) and PlaysForSure (Media Transfer Protocol). The default setting is Rhapsody mode. From your Sansa e200R Rhapsody’s main menu, go to Settings/USB Modes/Rhapsody or PlaysForSure to change the mode.
In Rhapsody mode your device will show under your computer’s “My Computer” as Removable Drives. One drive for your Sansa e200R Rhapsody MP3 player and one drive for the microSD card if inserted into the expansion card slot. In PlaysForSure mode the device will show up as “Sansa e200R Rhapsody” and no microSD card will be displayed. PlaysForSure mode is needed when using
your device with some software and monthly music subscription services.
Manual says to go into USB mode, but that option does not come up anywhere in the settings in my device.
You don’t have a USB Mode option in Settings? Are you sure you have a Rhapsody ® device? Maybe the above explanation and link to the manual will help.