Recently I signed up to SoundCloud, interested to see exactly what it was all about. I really, really like it. It describes itself as the following:
SoundCloud lets you move music fast & easy. The platform takes the daily hassle out of receiving, sending & distributing music for artists, record labels & other music professionals.
I am still only new, but have been uploading some tracks and am using it to power my music player, and soon will use its' smallest widget to place short samples in my catalogue. It's also easy to embed single samples in emails, pages and blog posts, like here:
The receiving and sending of music is a service I have yet to require but with a beautiful drop box which you can embed on your own site, I can see this will be an easy process, just like using every other service.
There are various plans including of course a free account, and they are limited by duration, not by file size. Hallelujah! So you don't have to think twice about uploading your beautiful high quality recording.
What I really like is that it is set up for music professionals and there really is no attraction for others. It has great social features so there is the ability to upload a track, mark it as a work in progress, share it only between your friends and get feedback. When commenting on a track, you can select at any duration and comment there. For example, at 1:39 you may wish to say "Ryan, what's the chord here? It's crazy!".
There is a nice mix of genres, everything from DJ's to real music - classical, film and contemporary. Also an increasing amount of New Zealander's on there which is good to see.