Check if the UUID from the fstab is right:$ lsblk -fIf it's not, maybe see: https://wiki.archlinux.org/index.php/Fstab#Swap_UUID
Network and Xorg issues sounds to me like you did too much in one go.https://wiki.archlinux.org/index.php/Be … leshootingCheck the connection, check the driver status and load the module: https://wiki.archlinux.org/index.php/Ne … figurationIf the network interface doesn't show up (eth0), read this part: https://wiki.archlinux.org/index.php/Ne … Interfaces
Of course you can edit the grub.cfg manually. But you're probably looking for this: https://wiki.archlinux.org/index.php/GR … ious_entryPS: If you miss GRUB Legacy, Syslinux is very similar: https://wiki.archlinux.org/index.php/Be … bootloaderAnd don't forget to mark it as solved.
Did you google the error? You can't be the only one with this problem. Try converting it to something else, or rip it in some other format (OGG/Vorbis, MP3).Also, see: https://wiki.archlinux.org/index.php/Fo … e#Legality