Handling ID3 chunk in Wav files

[IJabz]

AFAIK ID3 chunk should be 'id3 ' but found at least one tool that writes 'ID3 ', and Twonky reads such a chunk. Therefore if using jaudiotagger will create an 'id3 ' chunk but Twonky would ignore if found 'ID3 ' chunk before it, how to handle.

[IJabz]

Fixed, also copes better with wavs containing multiple 'id3 ' chunks and also properly reports if unable to modify a file safetly.

[IJabz]

Done.