Audacity - how do I fix this

[ringo747]

I have an mp3 file which was recorded on mp3 player via a line in. Unfortunately the input volume must have been set too high and so my audio sounds all 'overloaded'. How would I go about fixing this using audacity? Is there any way I can reduce the frequency curves while keeping the sound clean? Sorry I know nowt about sound editing.

 

[ringo747]

Thanks guys. I take it it is always better to have a weak sound recording where you can then increase the gain to make it louder if you wish?

 

[ringo747]

Unfortunately i was recording from another audio device into a recorder in real time so couldn't really monitor the audio inputs at the time. Thanks for the info.