* no way to bookmark or forward a link to song or filter to a friend. If this is to help sharing, then it fails that.
* clicking a song moves the rest down, making it less consistent
* no way to put filter in url bar. Reddit is great with their concatenation of two subreddits in one address: reddit.com/r/programming+technology . Please do it so I can see top songs from /m/Goa+Psychedelic
* no way for curators. A lot of art industry follows a system of 'stamps of approval' through publishers / producers or labels. I am a fan of music from Ninja Tune label who represent artists like Amon Tobin and Skalpel. I don't see a way to discover other music from same label. I understand this could be done through playlists maybe?
* registration requires a lot of information that I am not fan of giving out. Redit creates account with just username/password. I hate giving out personal information. Location is created with 'undefined, undefined'. Location is required. Location doesn't even accept my default places like Kualalumpur. It did find Warsaw.
* registration doesn't go forward. I click 'Lets do it', nothing happens
as I can't register couple other points of interest:
* A lot of people like to add own tags to music, like decades (sounds like 80s), or moods (cheery), or languages (Polish).
* how are comments differentiated from general song comments vs 'at 1:45 the drop is massive' (soundcloud way)
* linking with other data sources: please think about reading last.fm / musicbrainz / discogs to get list of known genres/styles/moods.
* as you are starting, the reddit way is to add stuff yourself as tons of users. Try to link content from elektoplazm , and other places where you can find out the public / create commons status
cheers