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  1. #21
    Quote Originally Posted by pinkdot View Post
    That would trigger transcoding on your nas. Something you don't want according to bpa.

    IMO, the best option here would be to find the CD's where gapless playback is wanted.
    Convert these files to FLAC.
    This way your nas doesn't have to do any transcoding, and FLAC is supported natively by all your squeezeboxes.

    Sent from my Redmi 3S using Tapatalk
    As I stated in my original post, I have no problem with any CDs at all - they all play perfectly in my digital collection having been converted into Apply Lossless ALAC using iTunes. It's the gapless albums downloaded from iTunes that have momentary gaps in between tracks.

    What confuses me is that both ALAC and AAC files have the same file extension of .m4a - so shouldn't LMS and Squeezeboxes handle them in the same way? Plus my ALAC files are CD quality, and therefore much larger in file size, yet they play gaplessly perfectly fine - yet AAC files have smaller file size and can't seamlessly handle gaps. All very confusing!
    My setup:
    • LMS 7.9.1-166 running on Synology 213air connected to Wi-Fi router via LAN cable
    • 1 x Squeezebox Touch, 2 x Squeezebox Radios, 1 x Squeezebox Receiver - all connecting over Wi-Fi
    • LMS library either ALAC Apple Lossless (scanned in on iTunes) or ACC/M4A 256kbps downloads from iTunes

  2. #22
    Senior Member
    Join Date
    Oct 2005
    Location
    Ireland
    Posts
    15,877
    Quote Originally Posted by AndyTwizzle View Post
    As I stated in my original post, I have no problem with any CDs at all - they all play perfectly in my digital collection having been converted into Apply Lossless ALAC using iTunes. It's the gapless albums downloaded from iTunes that have momentary gaps in between tracks.

    What confuses me is that both ALAC and AAC files have the same file extension of .m4a - so shouldn't LMS and Squeezeboxes handle them in the same way? Plus my ALAC files are CD quality, and therefore much larger in file size, yet they play gaplessly perfectly fine - yet AAC files have smaller file size and can't seamlessly handle gaps. All very confusing!
    1. ALAC and AAC are different audio encodings.
    2. M4A is a a complicated standard with many options for a file format - but there dozens of ways the AAC or ALAC contents can be put into the file. For example metadata and indexed to file can be at the start or at the end. Some choice of options in the M4A file format do not suit streaming (i.e player is only given a little bit of the file at a time starting at the beginning unlike an iPod or PC based player which can see the whole file when starting to play)

    Best option is to get a M4A analyser and find the difference between the good and bad files and convert the bad files to a LMS friendly version of M4A (i.e audio content doesn't change just the M4A file format).

  3. #23
    Senior Member
    Join Date
    Mar 2008
    Posts
    524
    I noticed non-gaplessness with AAC a few months back and found that the problem only occurred with synced players. Streaming to a single player worked fine.

    As others have pointed out the issues with M4A file layout, I'll mention that recent versions of Foobar2000 have an option under utilities to optimize the file layout. Not sure if that will help you, but in my experience it doesn't hurt anything.

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