Amp was discontinued by its author, Aychamo in favor of a different version he called Kindling. It was more of an Amp 2. He eventually stopped development of Kindling and posted the source. The source was worked by one of the community members who integrated XM control into it.
That program is called Amp XM and is available as open source. It does not have touch screen functionality, however. It was intended to be controlled using a Powermate or rotary type device.