i have my soundcard connected to a decent stereo system with a powerful 200 watts amp. i normally store replaygain information in all my files. because of that i have to increase to volume of my preamp because the outputs become more low when using replaygain in most cases.
now when i rip a new cd or play a file that has no replaygain information stored it burns your ears away and i don't want to destroy my speakers because of that.

i need a limiter that does nothing to my "replaygained" files but limits normal files.

i'm also interessted in a standalone limiter, because when i switch to my cd player it's the same problem.

Hmm, answering to your topic's question:
Advanced limiter prevents clipping. It "looks" ahead the song for few miliseconds (200ms, don't remember now) during playback and, if there is a danger of clipping, then it works by limiting the signal. So it works when is needed.

You might want to have a look at the preferences->playback page and there adjust the preamp under replaygain.

whats the benefit when i use replaygain and afterwards amplify the signal again.
(i only listen to wave files. clipping introduced by the encoder is no problem for me)

Here's what I do to decrease these problems.

First of all, the two problems:
a) Volume difference between replaygained files and ungained files
b) Volume difference between replaygained files and other sources connected to your amplifier (e.g. a standalone cd player)

Preamp settings that might help:
1) With RG info: Use a positive value (I personally use +2.0dB)
2) Without RG info: Use a negative value (I personally use -4.0dB)

Play around with the values.

Comments:
1) Will decrease the overall problem as it will reduce both a) and b). The cost is increased risk of clipping. You will still have the benefit that all tracks/albums have the "same" volume.

2) Will reduce a), but not b). Safer than 1) as it doesn't increase risk of clipping

If you use your computer most of the time when listening to music, you should probably do this volume equalizing biased towards decreasing the preamp for the ungained files.

You should also add the advanced limiter to the end of your DSP chain to handle the possible clipping.

I guess this isn't an ideal solution, but you have to decide for yourself how much you are willing to "sacrifice" and "risk" to reduce the volume difference.

I hope this helps, and if there is something completely wrong here, please inform me...

Btw: You might want to try the search feature, as this has been discussed before...