When I enable the "Music Player" widget, I click "Choose Songs", a new window appears and I select "From URL" and paste this link in http://antilight.org/svierg/mp3/Earth.mp3 and it appears as
test then I click save and nothing appears on my sidebar but the title. Any idea why? does it not work for external URLs?
Sorry, I was looking at the audio player shortcode before, not the music player widget!
I tested the Music Player widget, and it looks to me like the "From URL" was never intended as an option and it shouldn't be listed there after you click "Choose Songs." I will double check about that and reply back here with what I find out.
From my current understanding, you do need to purchase Extra Storage (AKA the Space Upgrade) in order to upload audio files which can then be used in the Music Player widget. To do it, you need to use the "playlist" shortcode as shown in the example in this help page link:
http://en.support.wordpress.com/audio/#embedding-the-playlist-into-your-sidebar (look below step 2 under the "Embedding the playlist into your sidebar" heading)
Is there anyway to enable a type of download function?
To offer music for download, first make sure you have rights to distribute it. Then you can simply create a plain link to the file and instruct readers to right-click and save the file. Here are the instructions for adding a link in case it's helpful:
I have another question, it's about the Music Player widget, I can't seem to get it working. Can I not link from another URL?
It does look to me like using an outside URL in the Music Player widget will not work, however, I'm going to double check on that detail for you.