this forum now vets new members' posts because of the influx of spam and trolls. Your post is here, but you are unlikley to get any replies because no one is going to take a chance on downloading a dropbox file from a stranger. Suggest you put your music in MP3 format and upload to your profile, but this is not the best place to get strangers to listen to and offer opinions on your music.
My reverbnation site: http://www.reverbnation.com/mikebirchmusic
Youtube: http://www.youtube.com/mikebirchmusic
Facebook: http://www.facebook.com/mikebirchmusic
Youtube: http://www.youtube.com/mikebirchmusic
Facebook: http://www.facebook.com/mikebirchmusic