Music Sharing Sites?

[Neil Doane <caine@antediluvian.org>]

I'm pretty new to all this and sorry if this isn't the right forum for the
question. :)  I was wondering if anyone here knew any good sites where one
could post music to be listened to and commented on by fellow musicians.  
It
would, I think, be really useful to occasionally post snippits or entire
original songs just to get feedback and ideas for improvement, basically 
get 
it listened to...especially for someone just starting out like me. :)  
Does 
anything like this exist now?  


Thanks!


Neil