Sound Files verzerrt und zu leise

     -- creating pipe for PLCI=0x101 msn = 5571XXX
    -- started pbx on channel (callgroup=0)!
  == Starting CAPI[contr1/5571XXX]/0 at demo,5571XXX,1 failed so falling back to exten 's'
    -- Executing Wait("CAPI[contr1/5571XXX]/0", "1") in new stack
    -- Executing Answer("CAPI[contr1/5571XXX]/0", "") in new stack
    -- CAPI Answering for MSN 5571XXX
    -- Executing DigitTimeout("CAPI[contr1/5571XXX]/0", "5") in new stack
    -- Set Digit Timeout to 5
    -- Executing ResponseTimeout("CAPI[contr1/5571XXX]/0", "10") in new stack
    -- Set Response Timeout to 10
    -- Executing BackGround("CAPI[contr1/5571XXX]/0", "demo-congrats") in new stack
    -- Playing 'demo-congrats' (language 'en')
  == Spawn extension (demo, s, 5) exited non-zero on 'CAPI[contr1/5571XXX]/0'
    -- CAPI Hangingup
    -- removed pipe for PLCI = 0x101

;
; CAPI config
;
;
[general]
nationalprefix=0
internationalprefix=00
rxgain=0.8
txgain=0.8

[interfaces]

msn=5571XXX
incomingmsn=5571XXX
controller=1
softdtmf=1
accountcode=
context=demo
;echosquelch=1
;echocancel=yes
;echotail=64
;callgroup=1
;deflect=12345678
devices=2