Audacity Forum

Personally, I prefer not to use compression when recording, and use compression after I've recorded "dry". If you over-do the compression, it's almost impossible to "uncompress" it accurately. I will however use "limiting" (a very fast "brick wall" compression...

Many old 45's had a middle bit, about 3cm diameter, that could be "popped" out.

If your record has this, pop out the middle and make a new middle out of card (with a hole in the right place).

If you have mp3 (and not AAC with Digital Rights Management), you just import them into Audacity.

In Audacity, mix down the audio into one track first.
Then "Export" as mp3.

As kozikowski said, more detail would make it easier to answer, but I think what you are asking for are "Compressor" and "Leveller" effects. (You may need to use "Normalise" after the compression).

SUPER speaks AAC
http://www.erightsoft.com/SUPER.html

(not sure how it copes with DRM though)

Nice idea Shubi, but I think you need to be looking at DAWs (Digital Audio Workstation) rather than audio editors for that kind of thing.

On Linux, check out Ardour2
On Windows, check out "Krystal" and "Reaper".

Try "Reaper" - it supports VST, so there's loads of plug-ins, and I think it gives you the video window that you're asking for.
It's not FreeWare, but it's very cheap, and you can try it out for as long as you like (possibly 30 days officially, but it doesn't stop working).

I've not got a machine with RealTek sound any more, so I'm going from memory. I'm guessing that it an on-board sound card (integrated with the mobo) and it has its own mixer interface icon in the systray (either as well as, or instead of the usual Windows mixer). Check in Windows Control Panel (soun...

How strange.... the first time I tried it, it prompted me for the first file only, then processed the rest without prompting. Tried it again and now it prompts for every file. There appears to be a setting for it in Preferences->Batch but it doesn't seem to work :( I'm not getting the crash problem ...