Music Player not loading music...

Ok so here's my problem. See if anyone can help me.
I load music through Sprint Media Manager to the phone.
They aren't hard files to manage.
They're all named correctly.
They're simple mp3 files.
2GB memory chip.
I turn on the Music Player on my device.
The little screen thingy pops up and says,
"Scanning Card." "Updating Music Folder." or w/e that little loading thing says.
Then where it says, "Artist, Album, Songs," and all that, it says
(0) in parenthesis. In other words, NO MUSIC! Can anyone help me? thanx! 

ok well I managed to fix the whole problem. I just reset the phone manually and did a wireless backup for my contacts, my photos were still there. =) Now I have a new problem though. When I plug my phone in my comp, locate the music folder in it, there's a new one that just says "music" which is where the music that's working is going. I renamed the old music folder "MUSIC 1" and here's where the problem lies.... I can't manage to delete a couple music folders in that one. The language or writing rather is like this weird code. When I hit delete it says, "cannot read from source." or something like that. It's pissin me off. lol Other than that the phone works fine.

I didn't create a new one, I just renamed the old one

Yes I would reformat the card which deletes everything and start from scratch.

Remember dont rename any of the folders... Those are the base folders the phone uses so it knows where to find stuff...its kinda like switching the "Boys" Sign and "Girls" sign on the doors of the bathroom and expecting people to know the difference....I mean..its not like the door is painted pink along with the girls sign.... (even tho in some childrens hospitals and such they are)

I try...but i was also trying to put it into Leymans Terms....so everyone can understand what RENAMING MAIN FOLDERS is like to a computer!

You never really said if this fixed your issue or not? Just let us know!

Ooooh I think i know...maybe whats going on...You said the folder is invisible...is it like greyed out when your looking at it in Windows? If so...you cant delete it because its a "hidden" folder....so you need to right click the folder...then left click properties...then uncheck the box that says "hidden" then click ok then try deleting it again... I came across this issue where i couldn't delete a folder from my PSP memory stick once either from the PSP or Windows...untill i undid the "hidden" box!! So if this is the case for you try it and let me know if not let me know!