YEM Content Explorer v3
Windows 10 / 11 (64-bit) · Free to download · License required to run
License: €99.99 one-time · via PayPal or Stripe inside the app
✓ Payment service available
This installer provides the starting release, v3. After
installing and launching the app, use the built-in Update
feature to get the latest version — it may include fixes and features not present in this one.
About
A powerful companion app for Yamaha Expansion Manager
YEM Content Explorer lets you browse, preview, and manage your Yamaha Expansion Pack library directly from your PC. Explore voices, drum kits, samples and waveforms from any PPF pack installed on your Yamaha Expansion Manager instance. YEM-CE does not decrypt CPF content. Only the information available inside Yamaha's own files is processed.
Voice/Drum Viewer
Display voices/drums on each item inside a pack with parameter details.
Sample tail trimmer & silence stripper
Trim sample file after loop end point.
Strip leading/trailing silence.
Sample Export
Export samples to WAV / AIFF / SF2 / SFZ from any expansion pack.*
Remap factory presets
Remap factory presets to different presets from different available models. There is also an option to remove them.
Multi-YEM Manager
Manage multiple YEM installations from one place.
Backup user data
Backup your entire YEM library with one click.
Version History
Version 3 Latest
🆕 v3.1.2 — August 28, 2026
SHA-256: ab2f70ff899026564129f299043e9f62b3fcfad485edc04f3c67c1b45e5f8ed5 → Click for VirusTotal report!
- 🆕 Play Sel. Loop (Sample Editor) — next to Play Sel., loops the current click-and-drag selection continuously instead of playing it once.
- 🆕 Get from Selection (Sample Editor, New Loop Points) — sets the loop start/end from the current selection with one click; turns Loop enabled on first if it wasn't already.
- 🆕 Keep playing while changing parameters (Sample Editor) — with this on, adjusting Fade In/Out, X-Fade, loop points, trim, or the selection while a sample is playing updates it live instead of stopping playback. Only shown when Settings > Audio > "Click to play/stop, instead of press-and-hold" is on, since it needs that to work.
- 🔧 Play w/o Sel. (Sample Editor) now plays at the same pitch as Play and Play Sel. — it previously ignored tuning/pitch adjustments and played back at the sample's raw pitch.
🆕 v3.1.1 — August 27, 2026
- 🆕 Sample Editor now asks for confirmation before closing if you have unsaved changes, instead of discarding them silently.
- ⚡ Space bar in Sample Editor now starts/stops playback the instant you press it, instead of waiting for you to release it.
-
🔧 Fixed the new click-to-toggle Play/Stop mode not stopping a sample that was already playing when something else changed what should be playing:
- Switching keys in Voice Viewer or Drums Viewer while a looping sample was playing.
- Opening Sample Editor ("Process sample") while a sample was playing in Voice Viewer or Drums Viewer.
- Clicking Detect Loop again in Sample Editor to cycle to the next candidate while Preview Loop was playing.
- 🔧 Preview Loop (Sample Editor) now also supports click-to-toggle play/stop, matching every other Play button — it previously stayed press-and-hold regardless of the Settings > Audio option.
🆕 v3.1.0 — August 25, 2026
-
🆕 Sample Editor — a new screen for working with a sample's audio, opened from the new "Process sample" button next to PLAY/LEFT/RIGHT in Voice Viewer and Drums Viewer. Starts with loop tools, built to grow into other sample-processing features over time.
- Auto-detects a good loop from scratch, or refines an existing one, using waveform analysis with a confidence score.
- Drag the loop start/end points right on the waveform, then press-and-hold Preview to hear the loop before committing to it.
- Add a crossfade at the loop seam and/or a fade in/out on the sample itself — draggable and percentage-based; press-and-hold Preview to hear the loop/crossfade, or Play/Play L/Play R to hear the whole sample, fades included.
- Each fade (Fade In, Fade Out, X-Fade) can use its own shape — Linear, Exponential, Logarithmic, or S-Curve — picked from a dropdown next to its slider; X-Fade also offers Equal Power, which keeps the loop's volume steady through the blend instead of dipping in the middle.
- Zoom and pan the waveform for sample-accurate placement.
- Save writes the changes into the sample file itself and updates the pack; Discard leaves everything untouched.
-
🆕 Bulk Rename — rename many voices, drums, and other items in a pack at once, from the new "Bulk Rename" option in the pack menu (not available for encrypted/CPF packs).
- Combine rename rules freely: replace the base name, find & replace, delete characters, change case, add a prefix/suffix, and sequential numbering — numbering can restart separately for each item type.
- Filter by item type and pick exactly which items to include; see every old name → new name change live, before applying anything.
- Catches empty, invalid, or duplicate names up front and won't let you apply until they're fixed.
- 🆕 Settings > Audio — "Click to play/stop, instead of press-and-hold": turns every PLAY/LEFT/RIGHT-style button in Voice Viewer, Drums Viewer, and Sample Editor into a click-to-start, click-again-to-stop control, with Space also starting/stopping Sample Editor's PLAY. Off by default, so nothing changes unless you turn it on.
🆕 v3.0.9 — August 19, 2026
- 🆕 New payment method — you can now pay by debit/credit card via Stripe, in addition to PayPal. This has also been forwarded to the base v3.0.0 installer, so new purchases get it right away.
🆕 v3.0.8 — August 13, 2026
- 🆕 New "Fix Loop Points" tool (pack menu, or Voice/Drums Viewer) — scans a pack or your whole library for samples whose loop end point doesn't match their actual audio data, and repairs both the sample file and its pack info in one step.
- ⚡ If no audio playback device is available on your system, the preview player now shows a clear status message instead of silently failing.
- 🔧 Deleting an invalid pack permanently sometimes didn't actually remove it — it could still show up again as invalid.
- 🔧 Fixed a crash when previewing certain samples with an inconsistent loop point — affected samples now play correctly and show a warning icon on the preview player.
- 🔧 Pressing the Left/Right arrow keys while browsing packs or items no longer scrolls the list sideways.
- 🔧 Fixed and improved the behavior of several UI controls in Voice/Drums Viewer and Dark theme.
- 🔧 Dialog windows could still center on the wrong monitor in a multi-monitor setup, particularly when the main window sat right at the boundary between two displays.
🔧 v3.0.7 — July 23, 2026
- 🆕 Drums Viewer now shows a Drum Setup panel with each drum sound's own parameters (pitch, level, pan, and more).
- ⚡ Drum sample preview playback now reflects each drum's own pitch and volume settings, for a more accurate preview.
- 🔧 Fixed some drum kit samples playing back at the wrong pitch in Drums Viewer.
- 🔧 The available keybanks list didn't always follow the Dark/Light theme correctly when switching between keybanks.
- 🔧 Clearing the item search box didn't always scroll the list back to the top.
- 🔧 Export Samples could show a misleading "merging" message for drum kits even when the merge option wasn't enabled.
- 🔧 Export Samples — fixed drum kit file naming: some Settings naming options could be silently missing from exported file names, and switching between Voice/Drum naming setup in Settings could mix up saved options.
- 🔧 Fixed a WAV sample export issue affecting one-shot drum samples.
🆕 v3.0.6 — July 20, 2026
- 🆕 Dark/Light theme — toggle it from the new button next to Settings on the main window. Applies instantly across the whole app, no restart needed, and your choice is remembered for next time.
- 🆕 Search items in the selected pack — click the search icon above the item list, type a name to jump to the first match, F3 or Ctrl+G for the next match. Type \p followed by a number (e.g. \p5) to search by PC number instead.
- 🆕 Export to Logic Pro (EXS) — choose "EXS" as the export format in Settings to generate an EXS24 sampler instrument alongside the exported WAV samples.
- ⚡ Update notifications now distinguish how important an update is. A critical update (e.g. an important bug fix) shows a red badge plus a one-time startup dialog recommending you update right away; a regular update still shows a quiet blue badge with no interruption.
- ⚡ About screen — Changelog is now the first tab, before License.
- ⚡ SFZ export is no longer alpha — it's now a standard export format (choose "SFZ" or "SFZ Condensed" from the Export As list, replacing the old separate checkboxes), with improved tuning/panning/volume accuracy and proper drum kit support, including hi-hat-style choke groups.
- ⚡ SF2 and SFZ exports now carry the actual sound of the voice, not just raw sample mappings — volume, filter/EQ, envelope, vibrato, effect sends, and mod wheel/aftertouch response are all included. EXS export remains sample-mapping only for now.
- ⚡ Exporting checked content is now much more flexible — a new "Content operations" menu (available both for the whole library and per-pack) lets you select/unselect items by content type (styles, MIDI files, registration banks, etc.), not just export everything at once.
- 🔧 Dialog windows (Voice Viewer, Drums Viewer, and others) now open properly centered — previously they could appear noticeably lower than centered, especially with the main window maximized.
🔧 v3.0.5 — July 3, 2026
- 🔧 Important: fixed a bug that could incorrectly alter a pack's internal information file, making it grow to an abnormal size over time. Updating is strongly recommended.
- 🔧 after adding an element from a voice in a different pack than the one you're editing, the newly added samples weren't recognized by the app until a manual refresh from the main screen.
⚡ v3.0.4 — July 3, 2026
- ⚡ Faster and more reliable scanning of large voice/drum libraries
⚡ v3.0.3 — June 29, 2026
- ⚡ SF2 export — multiple improvements to drum kit accuracy and compatibility
🔧 v3.0.2 — June 26, 2026
- 🔧 Silence stripper — batch procedure was not stripping files in certain circumstances
- ⚡ Silence stripper and tail trimmer — batch processing optimized
🆕 v3.0.1 — June 25, 2026
- Lock voices/drums — from pack menu (all at once) or individually from Voice Viewer / Drums Viewer
- Group items by type — automatically groups items in a pack by their type (voices, drums, styles, etc.)
- Item type tooltip on icon hover
- Simplified canvas context menu for silence stripping and tail trimming
- Drag-and-drop reorder — items can now be moved freely regardless of type
- Voice parameter export — configurable PC number base (0-based or 1-based) per export format (Cubase, MixMaster, Style Factory, etc.) in Settings
🎹 v3.0.0 — May 29, 2026
SHA-256: 6e7e31c38db409a82e4bd260a525ecb3578678ed615335a713f56e87f9551052 → Click for VirusTotal report!
- Voice/Drums Viewer — preview all voices/drums inside a PPF pack
- Export samples to WAV / AIFF / SF2 / SFZ from any supported samples (uncompressed/unencrypted)
- Preset sample remap support
- Sample tail trimmer — delete the audio excess after loop end point. Available across multiple areas of the application.
- Sample silence stripper — removes silence from the beginning or end of audio samples. Available across multiple areas of the application.
- Reorganise items in pack - change position of voices/drums, styles, registration banks or any other content. (only by type)
- Multi-YEM Manager — manage multiple YEM installations (improved)
🎹 Inherited Features - v2
- Export voices/drums parameters, like MSB LSB PC and Name, in multiple software applications format.
- Export other items, like styles, registration banks, midi files, etc.
- Sample tail trimmer — delete the audio excess after loop end point. Available in multiple places of application.
- Multi-YEM Manager — manage multiple YEM installations
- Backup for your YEM library
⚡ Improvements
- Better error reporting by attaching log file available in information window.
🚀 Future updates
- New extra functions will be available in the future.
System Requirements
Windows (native)
- Windows 10 or Windows 11 (64-bit)
- Yamaha Expansion Manager installed
- Internet connection required for license activation and periodic validity checking
- RAM: 4 GB minimum (functional) · 8 GB or more recommended for better performance
macOS via Parallels Desktop
- Tested on Intel-based iMac running Windows 11 inside Parallels Desktop
- RAM allocated to Parallels: 8 GB minimum for acceptable processing speed · 16 GB or more recommended
- Some visual aspects of the application may be affected by Parallels Desktop’s software graphics emulation
⚠ Not supported on Apple Silicon (M1 / M2 / M3 / M4).
YEM Content Explorer is a 64-bit x86 application and is not available for ARM processors.
Parallels Desktop on Apple Silicon Macs runs Windows 11 ARM, which does not guarantee compatibility with x86-64 applications.
Support & Feedback
Get help or send feedback directly from the app
Feedback & Error Reports: Use the built-in Feedback and Error Report screens inside the application to send bug reports, suggestions, or issues directly to the developer. These tools include relevant context (app version, system info) and are the fastest way to get a response.
If the application does not start at all:
An
app.log file is generated in the installation folder.
Send that file to yemce_error_report@valimaties.ro,
using the same email address from which the license was purchased.
License Agreement
End User License Agreement for YEM Content Explorer
By downloading and using YEM Content Explorer you agree to the End User License Agreement. The license is personal, non-transferable, and covers a single installation per purchased license key.
Read the EULA →