Bitsonic has released Violent Transient, a free VST plug-in for Windows that can change the transient of your audio track.
Here's what they say:
In acoustics and audio, a transient is a high amplitude, short-duration sound at the beginning of a waveform that occurs in phenomena such as musical sounds, noises or speech. If we like the big transient, the first is to mix the original sound with a short-term high frequency sound. The second way is to higher the first note for a little time. The first part of the violent plugin series works with the latter. The transient works like a compressor with short attack time, but the mechanism is different.