avoid extra output in test mp3gain run
avoid extra output in test mp3gain run

untitaker/beets,andremiller/beets,jcoady9/beets,beetbox/beets,gabrielaraujof/beets,drm00/beets,multikatt/beets,pkess/beets,jackwilsdon/beets,arabenjamin/beets,LordSputnik/beets,madmouser1/beets,pkess/beets,swt30/beets,bj-yinyan/beets,sampsyo/beets,PierreRust/beets,shamangeorge/beets,mosesfistos1/beetbox,sampsyo/beets,marcuskrahl/beets,mathstuf/beets,xsteadfastx/beets,lightwang1/beets,multikatt/beets,MyTunesFreeMusic/privacy-policy,parapente/beets,Kraymer/beets,Freso/beets,MyTunesFreeMusic/privacy-policy,xsteadfastx/beets,beetbox/beets,marcuskrahl/beets,sadatay/beets,Andypsamp/CODfinalJUNIT,xsteadfastx/beets,arabenjamin/beets,sadatay/beets,bj-yinyan/beets,jcoady9/beets,jmwatte/beets,LordSputnik/beets,dfc/beets,multikatt/beets,kelvinhammond/beets,beetbox/beets,YetAnotherNerd/beets,PierreRust/beets,jmwatte/beets,SusannaMaria/beets,lengtche/beets,arabenjamin/beets,LordSputnik/beets,YetAnotherNerd/beets,gabrielaraujof/beets,swt30/beets,Wen777/beets,artemutin/beets,marcuskrahl/beets,shanemikel/beets,lengtche/beets,ttsda/beets,asteven/beets,shanemikel/beets,randybias/beets,beetbox/beets,Wen777/beets,randybias/beets,multikatt/beets,madmouser1/beets,untitaker/beets,lightwang1/beets,gabrielaraujof/beets,asteven/beets,YetAnotherNerd/beets,drm00/beets,kareemallen/beets,ibmibmibm/beets,jackwilsdon/beets,moodboom/beets,mosesfistos1/beetbox,dfc/beets,ruippeixotog/beets,sampsyo/beets,ibmibmibm/beets,SusannaMaria/beets,swt30/beets,Kraymer/beets,kareemallen/beets,Andypsamp/CODjunit,moodboom/beets,parapente/beets,m-urban/beets,parapente/beets,Dishwishy/beets,Andypsamp/CODjunit,MyTunesFreeMusic/privacy-policy,kareemallen/beets,diego-plan9/beets,randybias/beets,Andypsamp/CODfinalJUNIT,asteven/beets,mathstuf/beets,untitaker/beets,Dishwishy/beets,Kraymer/beets,Dishwishy/beets,MyTunesFreeMusic/privacy-policy,xsteadfastx/beets,Freso/beets,lengtche/beets,jackwilsdon/beets,shamangeorge/beets,Kraymer/beets,mried/beets,kelvinhammond/beets,kelvinhammond/beets,Dishwishy/beets,diego-plan9/beets,sadatay/beets,Freso/beets,jcoady9/beets,marcuskrahl/beets,mathstuf/beets,lightwang1/beets,drm00/beets,drm00/beets,bj-yinyan/beets,ruippeixotog/beets,shanemikel/beets,untitaker/beets,mathstuf/beets,gabrielaraujof/beets,Freso/beets,m-urban/beets,ttsda/beets,Andypsamp/CODjunit,jmwatte/beets,arabenjamin/beets,sadatay/beets,artemutin/beets,Andypsamp/CODjunit,kelvinhammond/beets,madmouser1/beets,bj-yinyan/beets,imsparsh/beets,tima/beets,kareemallen/beets,SusannaMaria/beets,PierreRust/beets,Andypsamp/CODfinalJUNIT,jcoady9/beets,ruippeixotog/beets,LordSputnik/beets,PierreRust/beets,Andypsamp/CODjunit,andremiller/beets,imsparsh/beets,sampsyo/beets,tima/beets,swt30/beets,diego-plan9/beets,ttsda/beets,ibmibmibm/beets,ttsda/beets,mried/beets,shamangeorge/beets,parapente/beets,asteven/beets,SusannaMaria/beets,dfc/beets,ruippeixotog/beets,m-urban/beets,lightwang1/beets,Andypsamp/CODfinalJUNIT,shamangeorge/beets,diego-plan9/beets,mried/beets,randybias/beets,madmouser1/beets,shanemikel/beets,YetAnotherNerd/beets,mosesfistos1/beetbox,artemutin/beets,andremiller/beets,mosesfistos1/beetbox,artemutin/beets,jmwatte/beets,Wen777/beets,moodboom/beets,imsparsh/beets,ibmibmibm/beets,lengtche/beets,tima/beets,dfc/beets,m-urban/beets,Andypsamp/CODfinalJUNIT,moodboom/beets,imsparsh/beets,pkess/beets,pkess/beets,mried/beets,jackwilsdon/beets,tima/beets