Cellphone streaming represents the ultimate combination of convenience for consumers and business model flexibility for online music companies, but there’s one big problem: data connections, in the U.S. anyway, aren’t up to the task of streaming hours of high-quality music in a row without dropouts. And as more people begin streaming media to smartphones, the problem will only get worse.

The solution — pioneered by Slacker on its own hardware, embraced by Spotify, and promised by Rhapsody — is to cache music on the phone so that you can still listen to your collection even without a fast data connection.

Read on via Slacker Adds Automatic Music Caching to Android, Blackberry | Epicenter | Wired.com.