Pandora remains the most popular streaming music service in the US, according to eMarketer's new forecast, but Spotify's continued growth will change the balance of the market in coming years.

Programmatic audio is growing, but it is hampered by a lack of scale, disagreement over ad specs and reluctance from ad buying platforms to build audio-specific features.

Growing numbers of internet users in France and Germany now watch digital video, stream music and play games online. Younger people are leading this digital charge, while many older residents are more loyal to traditional media.

Eric Picard, vice president of product management at Pandora, talks about the obstacles and advantages of programmatic audio.

Podcasting in Canada is becoming a mainstay in consumer media time, and brands are looking to better understand the opportunities in this emerging category.