I made a couple WMA disks to play in the TCH with NAV system - but thee don't work very well - I will get through a couple of songs and then it just trys to move/switch to another disk and locks the system up - I have to eject the disk to get it to work again..... I don't think it is a radio problem - but probably the way that I am writing the CD in WMA format ---- any thoughts... I used MusicMatch to do the disk and the manual says you can't use packwriting software.....but not sure what Musicmatch is using....

Thanks!