In its Q2 highlights issued today, Verizon offered some numbers for mobile music and video. Subscribers completed 36.5 million music and video downloads in the quarter ending June 30. (Verizon ended the quarter with 66.7 million retail customers, and estimates have put V Cast participation at 7% to 10%.) Verizon did not break out music and video numbers.

That's a 5.5% increase from the 34.6 million downloads in Q1. During that same span, subscriber growth was up 2.3%. The number of downloads in Q2 2008 was a 46% increase from the 25 million downloads in Q2 2007. That's good growth, although mobile downloads are tiny relative to online downloads.

The RIAA puts the trade value of mobile single track downloads at $44 million for 2007. That's trade value, so total consumer spending was at least twice that.

Verizon teamed with Rhapsody (to power its V Cast service) during Q2 but too late in the quarter to make a difference in the numbers. We'll be able to see evidence of Rhapsody's impact in Q3.