[Plugin: Audio To Player] Shortcode url issue

Hi!
Audio to Player is very useful and nice plugin. But I have a problem; I use shortcodes in my wordpress site. But player doesn’t work when i use shortcode in any post/page.

Example:
http://www.domain.com/sample.mp3 (shortcode name is “album_demo_url”)

Usage in post/page :
1 – [acf field=”album_demo_url”] or
2 – <a href="[acf field="album_demo_url"]"></a>
But doesn’t work in both cases.

Must i use only direct mp3 link in post/page?
(<a href="http://www.domain.com/sample.mp3"></a>)

Thanks!

http://ww.wp.xz.cn/extend/plugins/audio-to-player/