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Band-in-a-Box for iOS
Joined: Feb 2020
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Aleja78 Offline OP
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Joined: Feb 2020
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Hi All,
I have been using Band-in-a-Box for many years and currently use Band-in-a-Box 2024 for Windows and the Band-in-a-Box iOS app version 2.0.7 on my iPad.

I have around 60 older songs that I created several years ago (probably with BIAB 2022 or earlier). These include original songs from my band as well as many practice songs.

For each song I have:
• SGU/MGU files
• sometimes MGX files
• matching *_render.m4a files

These songs were carefully customized:
• drums removed or muted in some arrangements
• specific RealTracks selected
• styles adjusted
• many mix and arrangement changes made manually

The rendered M4A files sound exactly as intended.
In older versions of the Band-in-a-Box iOS app these songs worked perfectly:
• the notation and chords were displayed
• the original rendered M4A audio was played

After updating to iOS app version 2.0.7, the notation is still correct, but the app seems to ignore the existing *_render.m4a files and regenerates the accompaniment from the SGU file.
The result is different:
• some styles are replaced
• some RealTracks are different
• the arrangement no longer matches my original rendered version

I also noticed something interesting:
When I use “Open → Local Song” in the iOS app, there is an old file called “your_old_biab_songs.zip” shown with the label “M4A+ Ready”. However, opening this ZIP causes the app to crash. The ZIP is not visible in the iPad Files app, so I cannot inspect its contents. I assume it is an old import created by a previous version of the app.
My questions:
1. Has support for older BB2Go songs with *_render.m4a files changed in the newer iOS app versions?
2. Is there a way to convert or migrate these older songs so the existing rendered M4A audio is preserved and used by the iOS app?
3. Is there a utility in BIAB 2024 Windows (or another method) to embed or link an existing *_render.m4a into the SGU file without rendering the song again?
4. Is “M4A+ Ready” related to this older ZIP import format, and is there a way to recover or convert these songs?

The important point is that I do not want the songs regenerated. The existing M4A files represent the final arrangements I created over many hours and are the performances I want to hear. I only need the iPad app to show the chords and notation while playing the original rendered audio.
Thank you very much for your help.

Band-in-a-Box for iOS
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Welcome to the forum. Your post is clear and very specific. I forwarded it to the developers to make sure they can see it to respond.


BIAB 2026 Win Audiophile. Software: Fender Studio One 8, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Fender Quantom HD8 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.
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There are many questions implied in your post so I hope that we do get answers that make sense. The issue that puzzles me is the fact that .m4a audio is a native format on iPadOS. That said, m4a, like mp3 is a format that covers many resolutions and bit depths—AppleMusic/iTunes supports MPEG 4 Apple Lossless ALAC 16 bit but there are others.


BIAB 2026 Audiophile Mac
24Core/60CoreGPU M2 MacStudioUltra/8TB/192GB Sequoia/Tahoe, M1 & M5 MBAir, 2012 MBP
Digital Performer11, Logic, Finale27/Dorico/Encore/SmartScore/Notion/Overture
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Aleja78, has PG Music contacted you?


BIAB 2026 Win Audiophile. Software: Fender Studio One 8, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Fender Quantom HD8 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.
Band-in-a-Box for iOS
Joined: Nov 2017
Posts: 99
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Joined: Nov 2017
Posts: 99
Hi Aleja78,

Thank you for the thorough detail and explanation of your issue. I've been away for a couple weeks, but will address this now. Your songs should work as structured, and we'll work to fix this.

1. Has support for older BB2Go songs with *_render.m4a files changed in the newer iOS app versions? - This sounds like a bug, and *_render.m4a file compatibility shouldn't have changed in the last update.

2. Is there a way to convert or migrate these older songs so the existing rendered M4A audio is preserved and used by the iOS app? - Opening one of these songs in the app, then saving again should move the .m4a content (if present) into the song file.

3. Is there a utility in BIAB 2024 Windows (or another method) to embed or link an existing *_render.m4a into the SGU file without rendering the song again? - The 'bundling' feature where .m4a and notation / RealCharts content is saved into the song file is exclusive to the mobile apps at this time.

4. Is “M4A+ Ready” related to this older ZIP import format, and is there a way to recover or convert these songs? - "M4A Ready" indicates .m4a audio content in the same directory as the song. "M4A+ Ready" corresponds to a song file with the .m4a audio bundled in the same file.

The "your_old_biab_songs.zip" file should only be visible in the Export view, so it sounds like another bug. The archive is created to collect (for backup, or re-import) all old files from the old version of iOS Band-in-a-Box, prior to the 2.0.0 update. It can sometimes be empty, and the "Open" function in the app isn't calibrated to handle it, either way.

- Tim

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XPro Styles PAK 11 for Mac & Windows Band-in-a-Box® version 2026 (and higher) is here with 100 brand new RealStyles, plus 31 RealTracks/RealDrums!

Guess who’s back again? That’s right! It’s our XPro Styles PAK’s triumphant return with the 11th edition in this series! 100 new styles are coming your way spread across the rock & pop, jazz, and country genres. And this edition's wildcard genre explores the immense and far-reaching catalogue of electronic music! The included 31 RealTracks and RealDrums can be used with any Band-in-a-Box® 2026 (and higher) package.

Special offers available until August 31st, 2026!

All the XPro Styles PAKs 1-11 are on sale for only $29 ea (Reg. $49 ea), or get them all in the XPro Styles PAK Bundle for only $149 (reg. $299)! Order now!

Learn more and listen to demos of XPro Styles PAKs.

Video: XPro Styles PAK 11 Overview & Styles Demos: Watch now!

XPro Styles PAKs require Band-in-a-Box® 2026 or higher and are compatible with ANY package, including the Pro, MegaPAK, UltraPAK, UltraPAK+, and Audiophile Edition.

Introducing Xtra Styles PAK 22 – Now Available for Mac Band-in-a-Box 2026 and Higher!

Xtra Styles PAK 22 for Mac & Windows Band-in-a-Box version 2026 (and higher) is here with 200 brand new RealStyles!

It’s time to celebrate! Xtra Styles PAK 22 for Band-in-a-Box® is here, and we've got 200 brand-new styles coming your way!

No Xtra Styles PAK is complete without the classic rock & pop, jazz, and country volumes you know and love, and we’ve got plenty to share, with 150 styles spread across too many genres to list! Of course, it also wouldn’t be complete with our special wildcard volume to add a little spice and pizzazz to the mix. This year, because we loved it so much the first time, we’ve decided to make the second iteration of our SynthMaster volume, full of new sounds, interesting genres, and 50 engaging styles, all making use of the diverse SynthMaster plugin! Here you can find genres such as airy yacht rock, sultry electrotango, and even some synth soca funk. Don’t wait, pickup up Xtra Styles PAK 22 today!

In this PAK you can find: dulcet folk ballads, funky gospel country, Brazilian jazz fusion, upbeat 1980s pop, classic Americana, a plethora of breezy bossa novas, indie singer-songwriter, scintillating synthwave, exuberant electronica, and many, many more!

Special offers available until August 31st, 2026!

All the Xtra Styles PAKs 1-22 are on special for only $29 each (reg $49), or get all 22 PAKs for $199 (reg $399)! Order now!

Learn more and listen to demos of the Xtra Styles PAK 22.

Video: Xtra Styles PAK 22 Overview & Styles Demos: Watch now!

Note: The Xtra Styles require the UltraPAK, UltraPAK+, or Audiophile Edition of Band-in-a-Box®. (Xtra Styles PAK 22 requires the 2026 or higher UltraPAK, UltraPAK+, or Audiophile Edition. They will not work with the Pro or MegaPAK version because they need the RealTracks from the UltraPAK, UltraPAK+, or Audiophile Edition.

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