Q:How to remove a mark?
A:First, pause playing audio track.
Second, seek to the mark position you want to remove by pressing
button or 
button.
At this time, 
button will change to 
button.
Then , press button to remove the mark.
Q:How to change pitch?
A:Go to speed settings dialog by pressing 
, then swipe left int the dialog.
Q: Can I use Pro version on two or more devices ?
Yes you can. There is no upper limit on the number of Android devices that can use licenses.
* Amazon Kindle is NOT supported
* You can't use the lisence in iOS devices. ( License purchased for one platform are not transferable to
another platform .)
Q: I have purchased Pro version. But it's still free version.
Please try to do following
1. Reboot the device.
2. Clear data of Google Play Store App. ( NOT Google Play "Services" )
3. If you use multiple Google accounts, change the order of logging in.
*In In-App Purchase, Google Play automatically uses first Google account which is logged into your phone.
Q: Audipo plays a file with no audio. How to fix this?
1. Please reset the preamp value in the Equalizer screen.
2. Turn off the Reberb and Bass Boost if you use
Q: There is noise in the audio.
Press the button on the left side of the menu button on the playback screen to display the effects screen. From that screen, turn off the settings for the Equalizer, Reverb, and Bass Boost.
Also, reset the value of the preamp on the topmost slider in the Equalizer tab (press the "0" button next to it).
Q: I can't select a video file
Display the folder tab in the file selection screen and select "Add Access Rights" from the menu.
Q: How do I cut/skip specific sections?
1. Set marks before and after the section you want to skip.
2. Long-press on the mark at the beginning of the section you want to skip to display the mark editing
screen.
3. Turn off "Enable following section" at the bottom of the mark editing screen. From now on, this
section will be skipped during playback in subsequent times.
You can add a button to toggle the section's enable/disable status with one tap through "Preferences" > "Edit Buttons."
4. To output the audio data with this section cut separately, go to the menu, then "Export to file" > "Options"
check "Skip disabled sections" and export to cut this section.
Q: Cannot be resolved in the FAQ.
If your question remains unresolved, please feel free to contact the developer.