Fix for the infinite loop in case a home-burned or old audio CD is inserted

Home-burned or old audio CDs usually don't have CDTEXT, that is what
was triggering the bug. The bug was releted to poor management of
track names, that are generated using the pattern "Track%1.wav". The
audiocd:/ KIO protocol requires that a device is also added to the
URL, and this was not done everywhere. Lack of device was triggering
an unexpected/strange behaviour in some KDE function making Amarok
enter an infinite loop.

REVIEW: 127468
BUG: 339190