the original instructions are quite simple , so I don't know whats wrong , but here , even simpler instructions . download the attachment to your pc , plug the n900 , choose mass storage mode , extract the archive to your n900 . there should be a new folder caller AudioBooster , inside it there should be two scripts and two folders . disconnect your n900 from PC on your n900 open xtreminal and paste the following : sudo su cd /home/user/MyDocs/AudioBooster/ sh ./AudioBoost.sh make sure rootsh or sudser is installed . ---thats all