[faeriegrove]

to me a .doc and pdf are essentially the same - text files to view

With the same reasoning you can say that a photo of a text page is the same as a text file. On screen they look the same...

I don't understand why it can't show a .doc, the same as a pdf?

Because the way a PDF should be shown is carefully defined and there are libraries that do this for you.

The way a DOCX file should be shown is defined by an extremely complex standard that ony Microsoft Word can handle. And sometimes even MSWord cannot.

most ALL of my sheet music files are .doc or docx. 

I'd be interested to know how... Sheet music is basic an image format, so you have images in DOCX files?

Can you make one of your sheet music files available to us?

I'm having trouble knowing how to make a post and add an attachment -- so bear with me.    I've clicked on Add Attachement, but don't see where it will put that attachment.    I should explain that how I learn new songs: is by going to a website such ultimate-guitar or cowboylyrics or other lyric website, and I copy and paste those lyrics/chords into a .doc    That is why most all my music is in .doc format.      That is the only way I know how to do that.    Sheet music I've "downloaded" from a website are the ones  in the .pdf format.   Can I just change the file extension (on my 500 pages of docs) to a pdf, and it will work?