in the top 15 Apple mobile apps, Top 100 for the top albums and singles from around the world (just got it free)

http://www.pcworld.com/article/230129/top_15_iphone_and_ipad_apps_that_cost_9...

Top_100_top_15_iphone_and_ipad_apps_that_cost_99_cents__pcworld
Top 100 lists the top album and single charts from around the world. You can listen to any full songs from the listings, as well as watch the music videos. (It was listed on this site as $.99, but I just found it free in the iTunes Store. :-)

TuneIn Radio Pro, a universal app for iPad/iPhone, listed as one of 15 best apps for $.99

It's slide #4. 
In addition to the free version, TuneIn Radio Pro allows you to not only listen, but also record from around 40,000 radio stations, along with traditional AM/FM stations.