[Android Q&A, Help & Troubleshooting] droidvoider:
that saved me a ton of time since I want to play with that stuff.. I too am playing with the code now let me know if you hit any walls

edit: is it it normal to be able to access sdcard like this?

/system/hidden/INTERNAL_SDCARD/Samsung/Music

(if not that is only from disabling packages.. )

pm list packages -d

package:com.mobeam.barcodeService
package:com.monotype.android.font.rosemary
package:com.sec.android.app.DataCreate
package:com.matchboxmobile.wisp
package:com.sec.android.widgetapp.samsungapps
package:com.samsung.android.app.galaxyfinder
package:com.samsung.android.themestore
package:com.sec.android.app.chromecustomizations
package:com.samsung.svoice.sync
package:com.google.android.googlequicksearchbox
package:com.drivemode
package:com.osp.app.signin
package:com.sec.android.app.clipvideo
package:com.sec.android.devicehelp
package:com.google.android.onetimeinitializer
package:com.android.wallpapercropper
package:com.sec.android.app.wfdbroker
package:com.att.android.digitallocker
package:com.samsung.android.app.withtv
package:com.skms.android.agent
package:com.samsung.android.hmt.vrshell
package:com.sec.android.app.safetyassurance
package:org.simalliance.openmobileapi.service
package:com.samsung.android.easysetup
package:com.android.externalstorage
package:com.telenav.app.android.cingular
package:com.sec.factory
package:com.android.mms.service
package:com.cequint.ecid
package:com.samsung.android.qconnect
package:com.amazon.mShop.android.install
package:com.sec.android.easyMover.Agent
package:com.samsung.ucs.agent.boot
package:com.sec.android.app.tourviewer
package:com.sec.android.sidesync.source
package:com.sec.android.Kies
package:com.samsung.faceservice
package:com.sec.android.app.voicenote
package:com.sec.android.widgetapp.easymodecontactswidget
package:com.samsung.android.email.provider
package:com.samsung.android.intelligenceservice2
package:com.sec.android.app.samsungapps
package:com.sec.android.app.billing
package:com.sec.android.app.minimode.res
package:com.sec.android.daemonapp
package:com.samsung.android.slinkcloud
package:com.sec.enterprise.knox.attestation
package:com.dsi.ant.service.socket
package:com.sec.android.AutoPreconfig
package:com.samsung.android.SettingsReceiver
package:com.sec.android.providers.security
package:com.samsung.android.securitylogagent
package:com.samsung.android.app.watchmanager
package:com.samsung.android.app.assistantmenu
package:com.locationlabs.cni.att
package:com.samsung.android.communicationservice
package:com.samsung.SMT
package:com.samsung.aab
package:com.samsung.cmh
package:com.samsung.dcm
package:com.samsung.vvm
package:com.sec.android.ofviewer
package:com.mobitv.client.tv
package:com.samsung.hs20provider
package:net.aetherpal.device
package:com.sec.att.usagemanager3
package:com.dsi.ant.sample.acquirechannels
package:com.samsung.android.smartface
package:com.android.nfc
package:com.instagram.android
package:com.sec.android.app.SecSetupWizard
package:com.android.statementservice
package:com.sec.bcservice
package:com.sec.modem.settings
package:com.sec.android.uibcvirtualsoftkey
package:com.samsung.android.sdk.professionalaudio.utility.jammonitor
package:com.android.sharedstoragebackup
package:com.sec.android.widgetapp.dualclockdigital
package:com.yellowpages.android.ypmobile
package:com.samsung.android.app.colorblind
package:com.google.android.music
package:com.android.printspooler
package:com.samsung.android.hmt.vrsvc
package:com.samsung.storyservice
package:com.android.dreams.basic
package:com.sec.android.app.music
package:com.sec.app.samsungprintservice
package:com.att.myWireless
package:com.sec.android.iap
package:com.sec.android.app.dictionary
package:com.yahoo.mobile.client.android.mail.att
package:com.ampsvc.android
package:com.samsung.android.app.talkback
package:com.sec.android.service.sm
package:com.asurion.android.mobilerecovery.att
package:com.sec.smartcard.manager
package:com.sec.allsharecastplayer
package:com.samsung.android.authservice
package:com.sec.android.Preconfig
package:com.samsung.app.slowmotion
package:com.google.android.apps.docs
package:com.dsi.ant.plugins.antplus
package:com.samsung.android.personalpage.service
package:com.samsung.advp.imssettings
package:com.wavemarket.waplauncher
package:com.hancom.office.editor
package:com.samsung.android.app.advsounddetector
package:com.samsung.android.app.mirrorlink
package:com.samsung.android.app.vrsetupwizardstub
package:com.google.android.syncadapters.contacts
package:com.android.chrome
package:com.samsung.android.asksmanager
package:com.sec.android.widgetapp.locationwidget
package:com.google.android.tts
package:com.google.android.apps.walletnfcrel
package:com.android.calllogbackup
package:com.google.android.partnersetup
package:com.trustonic.tuiservice
package:com.google.android.videos
package:com.sec.spp.push
package:com.dsi.ant.server
package:com.sec.android.app.myfiles
package:com.samsung.android.allshare.service.fileshare
package:com.synchronoss.dcs.att.r2g
package:com.sec.android.mimage.photoretouching
package:com.sec.android.automotive.drivelink
package:com.samsung.android.universalswitch
package:com.samsung.helphub
package:com.sec.android.app.sns3
package:flipboard.boxer.app
package:com.google.android.feedback
package:com.google.android.syncadapters.calendar
package:com.sec.android.providers.tasks
package:com.ubercab
package:com.sec.android.app.sbrowser
package:com.monotype.android.font.chococooky
package:com.android.dreams.phototable
package:com.sec.android.service.health
package:com.samsung.safetyinformation
package:com.facebook.katana
package:com.samsung.app.highlightplayer
package:com.samsung.enhanceservice
package:com.ipsec.vpnclient
package:com.att.android.attsmartwifi
package:com.sec.android.sidesync30
package:com.sec.android.app.vepreload
package:com.android.providers.partnerbookmarks
package:com.sec.android.app.nfctest
package:com.samsung.android.keyguardwallpaperupdator
package:com.samsung.android.app.accesscontrol
package:com.android.wallpaper.livepicker
package:com.samsung.android.beaconmanager
package:com.samsung.ucs.ucspinpad
package:com.amazon.mShop.android
package:com.samsung.android.app.FileShareClient
package:com.facebook.system
package:com.sec.android.soagent
package:com.samsung.android.scloud.backup
package:com.samsung.android.fmm
package:com.samsung.android.mdm
package:com.smlds
package:com.sec.android.app.shealth
package:com.samsung.accessory
package:com.google.android.backuptransport
package:com.sec.knox.knoxsetupwizardclient
package:com.samsung.android.app.interactivepanoramaviewer
package:com.samsung.android.scloud
package:com.samsung.android.spayfw
package:com.samsung.app.newtrim
package:com.samsung.android.spay
package:com.sec.android.app.bluetoothtest
package:com.samsung.android.intelligenceservice
package:com.samsung.android.sm.policy
package:com.sec.android.emergencylauncher
package:com.samsung.android.dlp.service
package:com.samsung.android.bbc.bbcagent
package:com.samsung.android.voicewakeup
package:com.sec.android.splitsound
package:com.wssnps
package:com.samsung.android.app.watchmanagerstub
package:com.policydm
package:com.samsung.android.app.FileShareServer
package:com.sec.fwservice
package:com.samsung.android.sdk.professionalaudio.app.audioconnectionservice
package:com.samsung.android.service.aircommand
package:com.enhance.gameservice
package:com.google.android.talk
package:com.samsung.dcmservice
package:com.americanexpress.plenti
package:com.lookout
package:com.sec.android.app.camera.plb
package:com.sec.face
package:com.sec.android.app.personalization
package:com.monotype.android.font.cooljazz
package:com.android.bluetoothmidiservice
package:com.facebook.appmanager
package:com.samsung.voiceserviceplatform
package:com.sec.android.app.SamsungContentsAgent
package:com.samsung.aasaservice
package:com.samsung.android.allshare.service.mediashare
package:com.sec.android.app.mt
package:com.sec.knox.switcher
package:com.android.bluetooth
package:com.samsung.ipservice
package:com.sec.android.app.magnifier
package:com.nuance.swype.input
package:com.samsung.android.sconnect
package:com.samsung.android.snote
package:com.samsung.android.video
package:com.amazon.kindle
package:com.samsung.location