Error memory Full....?

Hi.
I have a big file that it's size is 248 MB.The following code open this file :
void CPlayerAdapter::SetFileName( const TInt nFile1, const TInt nFile2, const TInt nFile3 )
{
User::LeaveIfError(fs.Connect());
User::LeaveIfError( SoundFile.Open(fs, FileName, EFileRead) );

if ( nFile1 != -1 )
{
SoundFile.Seek( ESeekStart, FilePos1 );
ptrSoundBuf1 = HBufC8::NewL( FileLen1 );
ptr1 = new (ELeave)TPtr8( ptrSoundBuf1->Des() );
SoundFile.Read(*ptr1, FileLen1 );
iState=ENotReady;
imda1 = CMdaAudioPlayerUtility::NewDesPlayerL( *ptr1, *this );
iMdaAudioPlayerUtility = imda1;

}
if ( nFile2 != -1 )
{
SoundFile.Seek( ESeekStart, FilePos2 );
ptrSoundBuf2 = HBufC8::NewL( FileLen2 );
ptr2 = new (ELeave) TPtr8( ptrSoundBuf2->Des() );
SoundFile.Read( *ptr2, FileLen2 );
iState=ENotReady;
imda2 = CMdaAudioPlayerUtility::NewDesPlayerL( *ptr2, *this );

}
if ( nFile3 != -1 )
{
SoundFile.Seek( ESeekStart, FilePos3 );
ptrSoundBuf3 = HBufC8::NewL( FileLen3 );
ptr3 = new (ELeave) TPtr8( ptrSoundBuf3->Des() );
SoundFile.Read( *ptr3, FileLen3 );
iState=ENotReady;
imda3 = CMdaAudioPlayerUtility::NewDesPlayerL( *ptr3, *this );
}

SoundFile.Close();
fs.Close();
}

CPlayerAdapter* CPlayerAdapter::NewL(
const TInt nFile1, const TInt nFile2, const TInt nFile3
MInternetRadioAdapterObserver& aObserver )
{

CPlayerAdapter* self = NewLC( nFile1 ,nFile2, nFile3, aObserver);
CleanupStack::Pop(self);
return self;
}

// -----------------------------------------------------------------------------
// CPlayerAdapter::NewL
// Two-phased constructor.
// -----------------------------------------------------------------------------
//
CPlayerAdapter* CPlayerAdapter::NewLC( const TInt nFile1, const TInt nFile2, const TInt nFile3,
MInternetRadioAdapterObserver& aObserver )
{
CPlayerAdapter* self = new (ELeave) CPlayerAdapter(aObserver);
CleanupStack::PushL(self);
self->ConstructL( nFile1 ,nFile2, nFile3 );
return self;
}

void CPlayerAdapter::ConstructL( const TInt nFile1, const TInt nFile2, const TInt nFile3 )
{
iMdaAudioPlayerUtility = NULL;
SetFileName( nFile1 ,nFile2, nFile3 );
nCurFileNo = 0;
}

I delete ptrSoundBuf and ptr, and make NULL them in deConstructor.
In another Class i have:
iPlayerAdapter = CPlayerAdapter::NewL( nFile1, nFile2, nFile3, *this);
and delete iPlayerAdapter in deconstructor.But after several times,that i go in this class, Error
memory full.Close some application and try again,is occured.
I anybody help me?
Thanks alot.