how to make mp3 or WMA-files louder?

[cyberstefke]

I just bought myself an mp3 player wih memory for working out. It's really convenient since it's so very tiny and light and off course shockfree since there are no disk.

However... I'm very disappointed by the volume off this thing. If I set the volume to maximum, it still is only about 70% of what my portable cd-player produces.

So how can I make my mp3's louder?

[flexer01]

you can buy programs that run through winamp to clean the sound......never used it though.