You didn't specified the firmware version.
If you are using multi-version patch 3.15.0-3.19.5761+, you can reduce the width of the area.
Spoiler:
Code:
<Patch>
patch_name = `Increase The Cover Size In Library`
patch_enable = `yes`
# Multi-version patch: 3.13.1-3.19.5761+
find_base_address = `DragonListWidget[qApp_deviceIsTrilogy="true"] {\n\tmin-height: 115px;`
#Mini
replace_string = 0059, `min-width: 534px;`, `min-width: 536px;`
replace_string = 006C, `max-width: 534px;`, `max-width: 536px;`
replace_string = 007F, `qproperty-leftMargin: 12;`, `qproperty-leftMargin: 00;`
#Glo\Aura
replace_string = 00E5, `min-width: 678px;`, `min-width: 693px;`
replace_string = 00F8, `max-width: 678px;`, `max-width: 693px;`
replace_string = 0133, `qproperty-leftMargin: 15;`, `qproperty-leftMargin: 00;`
#Aura HD\H2O
replace_string = 0198, `min-width: 960px;`, `min-width: 970px;`
replace_string = 01AB, `max-width: 960px;`, `max-width: 970px;`
replace_string = 01FE, `qproperty-leftMargin: 20;`, `qproperty-leftMargin: 00;`
#
#
find_base_address = `#coverPixmapView {\n\tmin-width: 60px;`
#Mini\Touch
replace_string = 0014, `min-width: 60px;`, `min-width: 85px;`
replace_string = 0026, `max-width: 60px;`, `max-width: 85px;`
replace_string = 0038, `min-height: 90px;`, `min-height:112px;`
replace_string = 004B, `max-height: 90px;`, `max-height:112px;`
#Aura HD\H20
replace_string = 0090, `min-width: 90px;`, `min-width:130px;`
replace_string = 00A2, `max-width: 90px;`, `max-width:130px;`
replace_string = 00B4, `min-height: 140px;`, `min-height: 163px;`
replace_string = 00C8, `max-height: 140px;`, `max-height: 163px;`
#Glo HD
replace_string = 010F, `min-width: 100px;`, `min-width: 145px;`
replace_string = 0122, `max-width: 100px;`, `max-width: 145px;`
replace_string = 0135, `min-height: 160px;`, `min-height: 205px;`
replace_string = 0149, `max-height: 160px;`, `max-height: 205px;`
#Glo\Aura
replace_string = 0190, `min-width: 70px;`, `min-width:104px;`
replace_string = 01A2, `max-width: 70px;`, `max-width:104px;`
replace_string = 01B4, `min-height: 110px;`, `min-height: 140px;`
replace_string = 01C8, `max-height: 110px;`, `max-height: 140px;`
</Patch>