Sales can be facilitated directly in the browser and users can select which of their tracks they want to make available to buy. They will appear with a 'buy with Minno' link, allowing one-click purchases.
Tracks will retail for $0.99 (?0.61) and when sales pass $10 (?6.16), they will be sent to the artists via PayPal.
SoundRain was developed at the recent Music Hack Day event in San Francisco, meshing the APIs of both SoundCloud and Minno.
Minno co-founder Noah Ready-Campbell said, "We could see how perfect this would be for any artist wanting to sell individual tracks at a low cost, and hassle-free for fans wanting to buy when and where they choose. SoundCloud's API has made it possible to do this and we couldn't be happier with the result."
SoundCloud founder and CEO Alexander Ljung added, "The fact that SoundRain was born at Music Hack Day just over a week ago is testament to how quickly these integrations with SoundCloud's API can come to life. By collaborating and connecting the services of two platforms, Minno has created a simple new way to help artists sell their tracks anywhere across the web."
The first artist to have their music sold this way is New York singer-songwriter Cyra Morgan.
SoundCloud now has over 4m registered users globally.
A video demonstration of how SoundRain works is available here.