You should be good. The B2 will play WAV, FLAC, MP3, AAC, (and ALAC, I think) files.
When you Import the music onto the B2, it must be arranged with a folder structure having the Artist name folders at one level, each containing folders for each album by that artist, and then each album folder containing the album's tracks: music\Artist\Album\tracks.
If you want the tracks to play in the order they appear on the album, make the track number a prefix of the name.
For example: 07 Can't Buy Me Love
or 01 The Beatles -
A Hard Day's Night
You can have the artist's name in the track name, or not, as you prefer.
Also, the USB disk you use for the Import must be formatted as FAT32. The B2 can do that for you. When you get your B2 and you're ready to move the music onto it, check back here if you need help.