As a direct result of Amazon releasing its (awesome) Cloud Player, music streaming service mSpot has upped its free storage to 5GB. mSpot works almost exactly like Amazon Cloud Player – upload your music, download the app, and stream to your heart's content. Unlike Amazon, however, the most storage that you can get from mSpot is 40GB ($3.99/month) with no plans in between the basic (5GB) and premium (40GB). On the upside, you don't have to shell out the annual fee right away - paying $4/month rather than prepaying for a year could attract some consumers to the service.
mSpot works on Windows and Mac, with apps available for iOS and Android.