MPC Pad 187 is a program editor for the Akai MPC 1000, MPC 2500, and MPC 500. The application allows for easy editing and creation of MPC program files.
The app can create and edit programs for all values found in the Slider, Mixer, and Program modes of the MPC 1000 OS 1. MPC Pad 187 can edit all program files it creates but may not be able to edit program files that are created or saved by the MPC hardware.
If you prefer to use a command line interface, I've put some open source software up on the utilities page. With the command line interface, you can script modifying and exporting MPC 1000 programs.
AkBrowser can read samples from both Yamaha A4000/A5000 and A3000 Sample Disks and convert sample waveform data into AIFF files. Samples can be auditioned from the application's file browser.
Check out the utilities page for my open source command line software to convert A4000/A5000 sample disks to wave files.