Internet Radio Listener Hours Soar To 1 Billion On Grace Digital’s Wi-fi Music Systems

After reaching 25 million listening hours just 3 years ago, Grace Digital has seen a major increase and expects this number to grow exponentially in the next year SAN DIEGO – February 16, 2015 – Grace Digital Inc., the leading manufacturer of award winning Wi-Fi based wireless music systems, announces that its North American customer base has exceeded 1…