On the heels of Google wading into the music streaming waters with its Google Play Music All Access service, with a $10 fee for all-you-can-eat streamed tracks, the indie music agency Merlin has today published some results of a recent survey of its 20,000-label member group, plus an analysis of 6.5 billion music streams over the last year, which spell out where the money is coming from today. It notes that streaming services are making increasing headway as a revenue driver for musicians, but that digital downloads — specifically Apple’s iTunes — are still ruling the roost.

Worldwide, iTunes has held on to its spot as the single-biggest source of revenues for Merlin’s independent label members, both across key markets like the U.S. and UK, as well across Europe and globally. Interestingly, Spotify is securely in second position, underscoring just how popular both Spotify and streaming services  have become — second has been a place held by Amazon for some time prior to this. Amazon’s MP3 download service subsequently slipped down to third place across the board, while Deezer and eMusic are split regionally in terms of their influence and in grabbing fourth place.

We’re reaching out to Merlin to see if we can get a specific percentage breakdown here. Typically iTunes has been estimated to hold around 60% of the digital music market by revenues. (Update: A Merlin spokesperson says those breakdowns are not being disclosed.)

“The new generation of digital services has created a new dynamic of consumer freedom, limitless choice and myriad paths to discovery,” Charles Caldas, the chief executive of Merlin, said today in a speech at the Great Escape conference in Brighton. “Our numbers illustrate that this dynamic is bringing incremental value to the market, and the demand from music fans for the music being released by our independent members is higher than ever before.” However, in what might be a swipe not just at big labels but big players like Google jumping deeper into the market, he also cautioned against companies that might be trying to apply legacy music royalty concepts to digital.

“The ecosystem is fragile: power is more concentrated than ever, and we are seeing an attempted land grab by the largest companies for digital market share as they try to recreate the old-market advantages they are clearly losing in the digital space,” he noted.

It will be interesting to see whether Spotify’s (and streaming’s) rise are eating into that 60% marketshare for iTunes. But the research from Merlin suggests that if this is the case it’s not a watershed moment quite yet: both formats appear to still be growing, even if streaming is growing more.

Some 92% of respondents in the survey said that streaming and subscription revenues (based on streaming) grew in 2012 compared to a year ago. One-third said the rise was as much as 100%.

The rise in downloads was less pronounced: around 66% said a-la-carte download sales grew alongside that streaming rise. Only 8.4% said the rise in download revenues increased by 100%.

In terms of what the growth in streaming means for actual businesses, the takeaway is still marginal.

Merlin’s members say that they expect royalties of $65 million or more for 2013 from streaming services, but if you just do the math and divide that among 20,000 members, that works out to only $3,250 per label. Considering that Merlin claims that its members’ share of streaming services is typically 12-20% higher than those of other major labels — included in Merlin’s counts are acts like The National, Grizzly Bear and Bon Iver, as well as labels like Domino and Beggars Group — it sounds like streaming, despite all the advances and popularity, remains for now just an opening act, and not the main event.

Full results of the report below.