You can play them using the AudioManager and Javaobject:
B4X:
Dim Effect As Int = 0
Dim Vol As Float = 1.0
Dim CTX As JavaObject
CTX.InitializeContext
Dim AM As JavaObject = CTX.RunMethod("getSystemService",Array("audio"))
AM.RunMethod("playSoundEffect",Array(Effect,Vol))
From the documentation, you may need to enable and/or load the sounds. But it works on My Nexus7 with the user setting disabled, So it may not be an issue.