Do you have WAV or MP3 files you'd like to alter? Audio Music Editor, which supports a wide range of formats, allows you to cut and add effects to your audio files.
In this trial version non of the features are limited, so you're free to play around as much as you like - although you can only save 3 files. Opening a file is easy, although you can only open one at a time, meaning combining files is harder than in similar applications. To add effects or filters, simply highlight part of the track at choose your option. While you can alter the effects parameters, they are not all that impressive. There is an ID3 tag editor so you can save meta data with your files.
In general Audio Music Editor is just too limited, and what's worse its natural competitor Audacity is much much better and free. Both programs work in much the same way, but Audacity has deeper abilities. If all you want to do is mess around with how a file sounds, Audio Music Editor is fine, and if you are new to Audio editing in general, you can get a feel for the kind of ways you can manipulate sound, but there is nothing here for experienced users.
Audio Music Editor is a very mediocre application, that distinguishes itself only by being worse than other similar programs