I've noticed an error I get sometimes during my use of Realband 2021. The error isn't obvious as it stays in the background and I only notice it when I close or minimize things on my desktop. This usually happens if rendering takes a long time, like minutes instead of seconds. It looks like the error is coming from 'auxhost.exe' and there is a little black and red icon on the task bar that is marked 64 32.
The error states 'The specified Semaphore already exists (12670860)' the word 'Test' is in the upper left corner of the error message. (see attached file)
It may be related to the rendering problem I'm having. The first time rendering a song is usually very quick around 10 to 15 seconds. The next time I render the same song without any changes and it can take minutes. If I close Realband and reopen, the first 1 or 2 times I try to render seem to work fine.
Hello Andrew, I got a new PC and had loaded the Jbridge software on it. I wasn't sure if I needed it when running RB 2021 64bit but loaded it anyway. The semaphore error message does show the JBridge logo on my task bar when this happens.
Introducing XPro Styles PAK 10 – Now Available for Windows Band-in-a-Box 2025 and Higher!
We've just released XPro Styles PAK 10 for Windows & Mac Band-in-a-Box version 2025 (and higher) with 100 brand new RealStyles, plus 28 RealTracks and RealDrums!
Few things are certain in life: death, taxes, and a brand spankin’ new XPro Styles PAK! In this, the 10th edition of our XPro Styles PAK series, we’ve got 100 styles coming your way! We have the classic 25 styles each from the rock & pop, jazz, and country genres, and rounding out this volume's wildcard slot is 25 styles in the Praise & Worship genre! A wide spanning genre, you can find everything from rock, folk, country, and more underneath its umbrella. The included 28 RealTracks and RealDrums can be used with any Band-in-a-Box® 2026 (and higher) package.
Here’s just a small sampling of what you can look forward to in XPro Styles PAK 10: Soft indie folk worship songs, bumpin’ country boogies, gospel praise breaks, hard rockin’ pop, funky disco grooves, smooth Latin jazz pop, bossa nova fusion, western swing, alternative hip-hop, cool country funk, and much more!
Special offers until December 31st, 2025!
All the XPro Styles PAKs 1 - 10 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!
XPro Styles PAKs require Band-in-a-Box® 2025 or higher and are compatible with ANY package, including the Pro, MegaPAK, UltraPAK, UltraPAK+, and Audiophile Edition.
Introducing Xtra Styles PAK 21 – Now Available for Windows Band-in-a-Box 2025 and Higher!
Xtra Styles PAK 21 for Windows & Mac Band-in-a-Box version 2025 (and higher) is here with 200 brand new RealStyles!
We're excited to bring you our latest Xtra Styles PAK installment—the all new Xtra Styles PAK 21 for Band-in-a-Box version 2025 (and higher)!
Rejoice, one and all, for Xtra Styles PAK 21 for Band-in-a-Box® is here! We’re serving up 200 brand spankin’ new styles to delight your musical taste buds! The first three courses are the classics you’ve come to know and love, including offerings from the rock & pop, jazz, and country genres, but, not to be outdone, this year’s fourth course is bro country! A wide ranging genre, you can find everything from hip-hop, uptempo outlaw country, hard hitting rock, funk, and even electronica, all with that familiar bro country flair. The dinner bell has been rung, pickup up Xtra Styles PAK 21 today!
In this PAK you’ll discover: Energetic folk rock, raucous train beats, fast country boogies, acid jazz grooves, laid-back funky jams, a bevy of breezy jazz waltzes, calm electro funk, indie synth pop, industrial synth metal, and more bro country than could possibly fit in the back of a pickup truck!
Special offers until December 31st, 2025!
All the Xtra Styles PAKs 1 - 21 are on special for only $29 each (reg $49), or get all 21 PAKs for $199 (reg $399)! Order now!
Note: The Xtra Styles require the UltraPAK, UltraPAK+, or Audiophile Edition of Band-in-a-Box®. (Xtra Styles PAK 21 requires the 2025 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.
Introducing XPro Styles PAK 10 – Now Available for Mac Band-in-a-Box 2025 and Higher!
We've just released XPro Styles PAK 10 for Mac & Windows Band-in-a-Box version 2025 (and higher) with 100 brand new RealStyles, plus 28 RealTracks and RealDrums!
Few things are certain in life: death, taxes, and a brand spankin’ new XPro Styles PAK! In this, the 10th edition of our XPro Styles PAK series, we’ve got 100 styles coming your way! We have the classic 25 styles each from the rock & pop, jazz, and country genres, and rounding out this volume's wildcard slot is 25 styles in the Praise & Worship genre! A wide spanning genre, you can find everything from rock, folk, country, and more underneath its umbrella. The included 28 RealTracks and RealDrums can be used with any Band-in-a-Box® 2026 (and higher) package.
Here’s just a small sampling of what you can look forward to in XPro Styles PAK 10: Soft indie folk worship songs, bumpin’ country boogies, gospel praise breaks, hard rockin’ pop, funky disco grooves, smooth Latin jazz pop, bossa nova fusion, western swing, alternative hip-hop, cool country funk, and much more!
Special offers until December 31st, 2025!
All the XPro Styles PAKs 1 - 10 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!
XPro Styles PAKs require Band-in-a-Box® 2025 or higher and are compatible with ANY package, including the Pro, MegaPAK, UltraPAK, UltraPAK+, and Audiophile Edition.
Introducing Xtra Styles PAK 21 – Now Available for Mac Band-in-a-Box 2025 and Higher!
Xtra Styles PAK 21 for Mac & Windows Band-in-a-Box version 2025 (and higher) is here with 200 brand new RealStyles!
We're excited to bring you our latest Xtra Styles PAK installment—the all new Xtra Styles PAK 21 for Band-in-a-Box version 2025 (and higher)!
Rejoice, one and all, for Xtra Styles PAK 21 for Band-in-a-Box® is here! We’re serving up 200 brand spankin’ new styles to delight your musical taste buds! The first three courses are the classics you’ve come to know and love, including offerings from the rock & pop, jazz, and country genres, but, not to be outdone, this year’s fourth course is bro country! A wide ranging genre, you can find everything from hip-hop, uptempo outlaw country, hard hitting rock, funk, and even electronica, all with that familiar bro country flair. The dinner bell has been rung, pickup up Xtra Styles PAK 21 today!
In this PAK you’ll discover: Energetic folk rock, raucous train beats, fast country boogies, acid jazz grooves, laid-back funky jams, a bevy of breezy jazz waltzes, calm electro funk, indie synth pop, industrial synth metal, and more bro country than could possibly fit in the back of a pickup truck!
Special offers until December 31st, 2025!
All the Xtra Styles PAKs 1 - 21 are on special for only $29 each (reg $49), or get all 21 PAKs for $199 (reg $399)! Order now!
Note: The Xtra Styles require the UltraPAK, UltraPAK+, or Audiophile Edition of Band-in-a-Box®. (Xtra Styles PAK 21 requires the 2025 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.
Band-in-a-Box® 2026 for Windows is here and it is packed with major new features! There’s a new modern look, a GUI redesign to all areas of the program including toolbars, windows, workflow and more. There’s a Multi-view layout for organizing multiple windows. A standout addition is the powerful AI-Notes feature, which uses AI neural-net technology to transcribe polyphonic audio into MIDI—entire mixes or individual instruments—making it easy to study, view, and play parts from any song. And that’s just the beginning—there are over 60 new features in this exciting release.
Along with version 2026, we've released an incredible lineup of new content! There's 202 new RealTracks, brand-new RealStyles, MIDI SuperTracks, Instrumental Studies, “Songs with Vocals” Artist Performance Sets, Playable RealTracks Set 5, two new RealDrums Stems sets, XPro Styles PAK 10, Xtra Styles PAK 21, and much more!
Special Offers
Upgrade to Band-in-a-Box® 2026 for Windows and save up to 50% on most upgrade packages during our special offer—available until December 31, 2025. Visit our Band-in-a-Box® packages page to explore all available upgrade options.
2026 Free Bonus PAK & 49-PAK Add-ons
Our Free Bonus PAK and 49-PAK are loaded with amazing add-ons! The Free Bonus PAK is included with most Band-in-a-Box® 2026 for Windows packages, but you can unlock even more—including 20 unreleased RealTracks—by upgrading to the 2026 49-PAK for just $49. Browse the full contents of each package and listen to demos here.
XPro and Xtra Styles PAKs Special Extended Until August 31st!
XPro & Xtra Styles PAKs Special Extended Until August 31st!
The XPro Styles PAKs and Xtra Styles PAKs special offers are now available until August 31st at 11:59pm PDT!
Ready to take your Band-in-a-Box® 2025 experience to the next level? Now’s the perfect time! Expand your style library with XPro and Xtra Styles PAKs—packed with a wide variety of genres to inspire your next musical creation.
What are XPro Styles and Xtra Styles PAKs?
XPro Styles PAKs are styles that work with any version (Pro, MegaPAK, UltraPAK, UltraPAK+, or Audiophile Edition) of Band-in-a-Box® 2025 (or higher). XPro Styles PAKS 1-9 includes 900 styles!
Xtra Styles PAKs are styles that work with the UltraPAK, UltraPAK+, or Audiophile Edition of Band-in-a-Box® 2025 (or higher). With over 3,500 styles (and 35 MIDI styles) included in Xtra Styles PAKs 1-20, the possibilities are endless!
Get the XPro Styles PAKs 1 - 9 for only $29 ea (Reg. $49 ea), or get them all in the XPro Styles PAK Bundle for only $149 (reg. $299)! Listen to demos and order now! For Windows or for Mac.
Note: XPro Styles PAKs require Band-in-a-Box® 2025 or higher and are compatible with ANY package, including the Pro, MegaPAK, UltraPAK, UltraPAK+, and Audiophile Edition.
Get Xtra Styles PAKs 1 - 20 are on special for only $29 each (reg $49), or get all 19 PAKs for $199 (reg $399)! Listen to demos and order now! For Windows or for Mac.
Note: The Xtra Styles require the UltraPAK, UltraPAK+, or Audiophile Edition of Band-in-a-Box®. (Xtra Styles PAK 19 requires the 2025 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.
Don’t miss this chance to supercharge your Band-in-a-Box setup—at a great price!
Mac 2025 Special Upgrade Offers Extended Until August 15th!
It's not too late to upgrade to Band-in-a-Box® 2025 for Mac® and save! We've extended our special until August 15, 2025!
We've added many major new features to Band-in-a-Box® 2025 for Mac®, including advanced AI tools like the amazing BB Stem Splitter and AI Lyrics Generator, as well as VST3 plugin support, and Equalize Temp. Plus, there’s a new one-stop MIDI Patches Picker with over 1,100 MIDI patches to choose from, all neatly categorized by GM numbers. The MultiPicker Library is enhanced with tabs for the SongPicker, MIDI Patch Picker, Chord Builder, AI Lyrics Generator, and Song Titles Browser, and the tabs are organized into logical groups. The Audiophile Edition is enhanced with FLAC files , which are 60% smaller than AIFF files while maintaining identical audio quality, and now ships on a fast 1TB SSD, and much more!
Check out all the new features in Band-in-a-Box® 2025 for Mac® here:
Purchase your Band-in-a-Box® 2025 for Mac during our special to save up to 50% off your upgrade purchase and receive a FREE BONUS PAK of amazing new Add-ons. These include the 2025 RealCombos Booster PAK, Look Ma! More MIDI 13: Country & Americana, Instrumental Studies Set 22: 2-Hand Piano Soloing - Rhythm Changes, MIDI SuperTracks Set 44: Jazz Piano, Artist Performance Set 17: Songs with Vocals 7, Playable RealTracks Set 4, RealDrums Stems Set 7: Jazz with Mike Clark, and more!
Upgrade to the 2025 49-PAK for just $49 and add 20 Bonus Unreleased RealTracks and 20 RealStyles, FLAC Files for the 20 Bonus Unreleased RealTracks, Look Ma! More MIDI 14: SynthMaster, MIDI SuperTracks Set 45: More SynthMaster, Artist Performance Set 18: Songs with Vocals 8, and RealDrums Stems Set 8: Pop, Funk & More with Jerry Roe.
Learn more about the Bonus PAKs!
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