how 2 use:
/track/<id>
/album/<id>
/playlist/<id>
params are:
t: tagging, boolean
f: format, can be one of these:
aac_96, 64, 128, 320, mp4_ra1, mp4_ra2, mp4_ra3, mhm1_ra1, mhm1_ra2, mhm1, sbc_256, misc
available formats depend on the track