Thumbplay is a streaming music service that works with BlackBerry, iPhone, and Android smartphones. This week the company added the ability to cache songs on an iPhone, iPod touch, or iPad for listening while you’re offline. The Android and BlackBerry clients already had this capability.
The new iOS version also supports iOS 4 multitasking, letting you listen to music in the background while running other apps in the foreground. You can also control audio playback using the music widget.
Thumbplay is available as a free download from the App Store, and comes with a free 3-day trial, after which you can pay $9.99 per month for a subscription which lets you access any song in the Thumbplay content library, which the company says includes about 10 million tracks.