C150 shows up differently on different computers

[AiShiDeSu]

So I was trying to transfer something from my mom's computer to mine
and I clicked open the sansa 150, the screen says
-RECORD
-MUSIC
-WAV FILE
and some other ones
but no music files

and when I plug it into my mom's computer
the computer shows the different folders except for these:
-RECORD
-MUSIC
-WAV FILE
but then about 20 songs randomly pops up
they aren't original songs that came with the MP3 either .__.

And when my mom tried to input an WMV file from her computer, it would not show up on my computer

WEIRD o.O can anyone give me any guidance on this?

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