Skip to content
AppClap
It's 404, yo! is unclaimed —
I

It's 404, yo!

Make any sample pack SP-404 MkII-ready·its404yo.iamjarl.com

Visit

A native macOS app that batch-converts sample packs into the format the Roland SP-404 MkII accepts (16-bit linear PCM WAV at 44.1 or 48 kHz), fixing the 'Unsupported File' error. It analyzes dropped files or folders, shows plain-language reasons for each needed change, and only re-encodes files that actually need it. It runs fully offline with no account or cloud upload, preserving folder structure and channel configuration.

What it's for

Batch-convert whole sample packs for SP-404 MkII SD-card importFix '32-bit float to 16-bit' conversion issuesResample files to 48 kHz or 44.1 kHzConvert FLAC, M4A, AAC files to WAVAvoid the SP-404 MkII 'Unsupported File' error

Features 12

  • Converts 32-bit float / 24-bit files to 16-bit linear PCM WAV
  • Fully offline processing, no account or cloud upload
  • Native app built with Core Audio
  • One-click conversion producing a new output folder
  • Plain-language explanation of why each file would fail
  • Preserves mono/stereo channel configuration
  • Preserves original folder structure
  • Resamples to 48 kHz or 44.1 kHz as chosen by user
  • Skips re-encoding files that already import cleanly
  • Strips exotic metadata chunks via clean re-write
  • Supports WAV, AIFF, MP3, M4A, AAC and FLAC input formats
  • Whole-pack batch conversion (drag in a folder or files)

At a glance

TypeDesktop app
DeploymentInstalled (local)
PlatformsmacOS
ForRoland SP-404 MkII users
CompanyIAMJARL · 2024

Pricing

One-time purchase of $0.99 via the Mac App Store; not a monthly subscription.

It's 404, yo!Quote

$0.99 one-time purchase via the Mac App Store, not a recurring subscription.

Last checked 29 days ago·