Sonos does not seem to index m4p music in my iTunes library. How can I fix this?

Hello Sherburn, Apple m4p tracks are DRM (Fairplay) protected and Sonos will not be able to index nor play them. There is a way to turn them into DRM free tracks with a iTunes Match subscription as described here: click me Regards, Daniel H.

Thank you so much for this suggestion Daniel, not only have I managed to remove the annoying DRM from some of my favourite music, I've also managed to convert a lot of my tracks into a much richer 256kbps which makes them sound even better on my new Sonos play 3.

I hadn't even heard of iTunes Match until coming onto this forum, Apple should be paying you guys for the free advertising!

Steve

Hello all, 

Apple m4p tracks are DRM (Fairplay) protected and Sonos will not be able to index nor play them. 

There is a way to turn them into DRM free tracks with a iTunes Match subscription as described here: 

click me 

Regards, 

Daniel H.

Hello Sherburn, Apple m4p tracks are DRM (Fairplay) protected and Sonos will not be able to index nor play them. There is a way to turn them into DRM free tracks with a iTunes Match subscription as described here: click me Regards, Daniel H.
This is unbelievable. OF COURSE you don't say that in your marketing material. You wait until we have plunked down 100's of $ and are stuck with your system. This little "bug" has completely screwed me. Thanks for nothing.

You're blaming Sonos for Apple's past behaviour?

Hello Sherburn, Apple m4p tracks are DRM (Fairplay) protected and Sonos will not be able to index nor play them. There is a way to turn them into DRM free tracks with a iTunes Match subscription as described here: click me Regards, Daniel H.
I think I am right in saying no 'non-Apple' devices are able to play m4p files. Apple deliberately locked down the tracks to keep the music publishers quiet and allow their artists music to be delivered digitally. You may have noticed that Apple has not locked down their tracks for some considerable time now as the publishers allowed Apple to relax that.
If you use iTunes Match, you can redownload the tracks without the DRM locked in to the files and Sonos will be able to read those. There are a number of other ways to remove the DRM but I think those have been covered.
My Fiat 500 is unable to read any Apple files but I didn't go screaming to Fiat (or Apple). I just converted the ones I wanted to play into MP3 ones. Simples.

You're blaming Sonos for Apple's past behaviour?
I blame Sonos for creating an inferior product and hiding its main (huge) flaw from the buying public until after they've made the purchase. Apple's behavior has nothing to do with it.

Hello Sherburn, Apple m4p tracks are DRM (Fairplay) protected and Sonos will not be able to index nor play them. There is a way to turn them into DRM free tracks with a iTunes Match subscription as described here: click me Regards, Daniel H.
How does your Fiat analogy have anything to do with this issue? Fiat doesn't try to sell their cars as the grand solution to issues with playing your music collection wirelessly. I don't want to have to pay Apple AGAIN for a subscription to something I don't otherwise need just because I wasn't informed that the Sonos system doesn't do what it purports to do when they're selling it to you. Simples.

You're blaming Sonos for Apple's past behaviour?
Apple put the DRM protection on.  They could offer people the ability to take it off for free but don't.  Sonos is powerless to do anything about it.  This "huge flaw" can be dealt with for a small amount of money (paid to Apple, not Sonos).

Most Sonos customers are unaffected by this issue.  I have personally avoided anything Apple for years (including any of their music formats) because you never know what restrictions they might put on next.

Blame Apple not Sonos.  Hand over a few £/$.  Stop exaggerating the problem,  Start enjoying a fabulous, not inferior, system.

Hello Sherburn, Apple m4p tracks are DRM (Fairplay) protected and Sonos will not be able to index nor play them. There is a way to turn them into DRM free tracks with a iTunes Match subscription as described here: click me Regards, Daniel H.
My point was that it appeared that the Fiat multimedia system would allow me to dump a load of tracks onto a Usb stick and play them directly into the car. This proved not to be as the system was manufactured by Microsoft and they don't support .m4a files, let alone .m4p ones. I was a bit narked by this but worked out a workaround.
The main point is that Sonos is not alone in this issue. It is unfortunately an issue that you were not aware of and hadn't checked before you bought from your retailer. The brand new Denon HEOS system FAQ page has this to say: 

Before 2009 music files purchased from iTunes were embedded with DRM (Digital Rights Management) access technology. Like many other systems on the market, the HEOS App will not play music files with DRM embedded. Apple allows consumers to download a DRM free version of their purchased content which is fully supported by HEOS. 

For a single year's subscription to iTunes Match you would be able to convert all your tracks (and I'm assuming you have a lot of them) to a non-DRM version.