I noticed there was an option to upload music. Was this intended for the members to be able to upload music to? Or was this a feature that may go away and is not intended for this site?

I see two songs out there, which I think are visible to everyone.

If we are allowed to upload music, will it be visible to all? or just to me logging into my account?

Yes, club members can upload music and it will be available to all club members.

To upload music you need to:
1) Go to the section "Music"
2) Create the musician first. For this in the field "...or add one:" write the name of the musician and press the button "Add!".
Note. You can consider creating an Album (for example, with your favorite music) instead of a musician. The procedure is the same, just in the field "...or add one:" type the title for your album.
3) On the following page fill in all fields.
4) Add music to the created album.

Looking forward to hearing your uploaded music